Program Of Increment and Decrement Operator.

#include<stdio.h>
main()
{
int x,y,exp1,exp2;
clrscr();
x=10;
y=15;
exp1=x* ++y;
printf("Value of the first expression is: %d\n",exp1);
x=10;
y=15;
exp2=x* y++;
printf("Value of second expression is : %d\n",exp2);
}

Program To Find The Values Of Logical Operators Expressions.

#include<stdio.h>
main()
{
int x=60, y=200, b=2, c=160;
int exp1, exp2, exp3, exp4, exp5, exp6;
clrscr();
exp1= x<y;
exp2= x+y<y;
exp3= x*b==120;
exp4= (x==60)&&(y>b);
exp5= (y!=60)||(c>x);
exp6= !(x>60);
printf("Value of first expression is : %d\n",exp1);
printf("Value of second expression is : %d\n",exp2);
printf("Valye of third expression is : %d\n",exp3);
printf("Value of forth expression is : %d\n",exp4);
printf("Value of fith expression is : %d\n",exp5);
printf("Value of sixth expression is : %d\n",exp6);
}

Program To Find The Solution Of Mixed Mode Expression

#include<stdio.h>
main()
{
float exp1, exp2;
int A, I, J, K;
clrscr();
A=4.5;
I=1;
J=2;
K=3;
exp1= J*K+A;
exp2= K/J*(A+2.3*I);
printf("Value of first expression is : %f\n",exp1);
printf("Value of second expression is : %f\n",exp2);
}

Program To Find Value Of Float Expression.

#include<stdio.h>
main()
{
float exp1, exp2;
clrscr();
exp1=12.0/3.0+5.5*2.0-3.0;
exp2=(12.5+2.5)*2.0-(11.5-2.5)/3.0+13.5;
printf("Value of first expression is : %f\n",exp1);
printf("Value of second expression is :%f\n",exp2);

}

Program To Find The Value Of Integer Expressions

#include<stdio.h>
main()
{
int exp1, exp2, exp3;
clrscr();
exp1=4*5+5/2-9%2;
exp2=3*5/2+6*9%3+2*3-3;
exp3=3*(5+2*3)+25/(2*3+2);
printf("Value of first expression is : %d\n",exp1);
printf("Value of second expression is : %d\n",exp2);
printf("Value of third expression is : %d\n",exp3);

}

Program Showing Type Conversion Across Assignment

#include<stdio.h>
 main()
 {
int a;
clrscr();
a=1;
printf("\n when a=1 then output is %d\n",a);
a='C';
printf("\n when a='C' then output is %d\n",a);
a=5.2;
printf("\n when a=5.2 then output is %d\n",a);
 }

Program Showing Use of Constants.

#include<stdio.h>
#define PASS_MARKS 40
main()
{
         printf("Passing Marks is : %d", PASS_MARKS);
}

Program To Search An Element From Array

#include<stdio.h>
main()
{
int i,n,e,a[30];
clrscr();
printf("\nEnter total number of elements : ");
scanf("%d",&n);
printf("Enter %d Integer Numbers\n",n);
for(i=0;i<n;i++)
scanf("%d",&a[i]);
printf("Enter the element you want to search : ");
scanf("%d",&e);
i=0;
while(i<n&&e!=a[i])
{
i++;
}
printf("The Element of Array is located at : %d position",i+1);
return(0);
}

Program To Sort The Array Elements

#include<stdio.h>
main()
{
int n,i,j,temp,a[30];
clrscr();
printf("\nEnter The Total Number Of Elements You Want In Array :");
scanf("%d",&n);
printf("Enter %d Integer Numbers\n",n);
for(i=0;i<n;++i)
scanf("%d",&a[i]);
for(i=0;i<n;++i)
{
for(j=i+1;j<n;++j)
{
if(a[i]>a[j])
{
temp=a[i];
a[i]=a[j];
a[j]=temp;
}
}
}
printf("The Sorted Array Elements Is\n");
for(i=0;i<n;++i)
printf("%d\n",a[i]);

}

Program To Reverse Of An Array Elements

#include<stdio.h>
main()
{
int a[25],n,i,j,temp;
clrscr();
printf("\nEnter The Number Of Elements You Want In Array : ");
scanf("%d",&n);
printf("Enter The %d Integer Numbers\n",n);
for(i=0;i<n;i++)
scanf("%d",&a[i]);
j=i-1;
i=0;
while(i<j)
{
temp=a[i];
a[i]=a[j];
a[j]=temp;
i++;
j--;
}
printf("The Elements Of Reversed Array Is :");
for(i=0;i<n;i++)
printf("%d\n" ,a[i]);
return(0);
}

Program To Find Smallest And Biggest Number In Array Of Integer Numbers

#include<stdio.h>
main()
{
int a[20],n,i,big,small;
clrscr();
printf("\nEnter Total Numbers You Want In Array : ");
scanf("%d",&n);
printf("\nEnter The %d Integer Numbers\n",n);
for(i=0;i<=n;i++)
scanf("%d",&a[i]);
big=a[0];
for(i=0;i<=n;i++)
if(a[i]>big)
big=a[i];
printf("\nThe Largest Number In Array Is : %d",big);
small=a[0];
for(i=0;i<=n;i++)
if(a[i]<small)
small=a[i];
printf("\nThe Smallest Number Is: %d",small);
return(0);
}

Program To Check Whether A Given String Is Palindrome Or Not.

#include<stdio.h>
#include<string.h>
main()
{
char strng[30];
int i,lngth,flag=0;
printf("Enter a string : ");
scanf("%s",&strng);
lngth=strlen(strng);
for(i=0;i<lngth;i++)
{
if(strng[i]!=strng[lngth-i-1])
{
flag=1;
break;
}
}
if(flag)
printf("%s is not a palindrome");
else
printf("%s is a palindrome");
returm 0;
}

Program To Check Whether A Given Number Is Palindrome Or Not.

#include<stdio.h>
main()
{
int num;
int temp;
int digit;
int rnum=0;
clrscr();
printf("Enter The Integer Number : ");
scanf("%d",&num);
temp=num;
do{
digit=temp%10;
temp=temp/10;
rnum=rnum*10+digit;
}
while(temp>0);
if(rnum==num)
printf("The Given Number Is Palindrome");
else
printf("The Given Number Is Not Palindrome");
}

C Program To Find First 10 Multiple of a Number Using For Loop

#include<stdio.h>
main()
{
int num, i=1;
clrscr();
printf("Enter the number whose multiple you want to see : ");
scanf("%d",&num);
for(i=1;i<=10;i++)
{
printf("%4d",i*num);
}
getch();
}

C Program To Find Sum of a First 10 Natural Numbers Using For Loop

#include<stdio.h>
main()
{
int i,sum=0;
clrscr();
for(i=1;i<=10;i++)
{
sum=sum+i;
}
printf("The total of first 10 natural number is : %d",sum);
getch();
}

C Program To Find First 10 Multiples of a Number Using Do-While Loop

#include<stdio.h>
main()
{
int num,i=1;
printf("Enter the number whose multiple you want");
scanf("%d",&num);
do
{
printf("%3d",i*num);
i++;
}while(i<=10);
getch();
}

C Program To Find Sum of First 10 Natural Numbers Using Do-While Loop.

#include<stdio.h>
main()
{
int num=1, sum=0;
clrscr();
do
{
sum +=num;
num +=1;
}while(num<=10);
printf("The total of first 10 natural numbers is: %d",sum);
getch();
}

C Program To Find The First 10 Multiples of a Number Using While Loop.

#include<stdio.h>
main()
{
int num,i=1;
clrscr();
printf("Enter the number whose multiple you want");
scanf("%d",&num);
while(i<=10)
{
printf("%3d",i*num);
i++;
}
getch();
}

C Program To Find Sum of First 10 Natural Numbers Using While Loop.

#include<stdio.h>
main()
{
int num=1,sum=0;
clrscr();
while(num<=10)
{
sum +=num;
num +=1;
}
printf("The sum of first 10 natural number is : %d",sum);
getch();
}

Program To Check Whether A Number is Odd or Even.

#include<stdio.h>
void main()
{
int n;
clrscr();
printf("Enter the integer value\n");
scanf("%d",&n);
if(n%2==0)
printf("The value is even");
else
printf("The value is odd");
}

Program To Check Whether A Number Is Prime or Not.

#include<stdio.h>
void main()
{
int n,i;
clrscr();
printf("Enter the Number :");
scanf("%d",&n);
i=2;
while(i<=n-1)
{
if(n%i==0)
{
printf("Number is not a prime number\n");
break;
}
i=i+1;
}
if(i==n)
printf("Number is a prime number");
}

Program To Print All Even Numbers

#include<stdio.h>
#include<conio.h>
void main(void)
{
int i=2;
clrscr();
while(i<=10)
{
if(i%2==0)
{
printf("\nThe value is =%d",i);
}
i++;
}
}

Program To Calculate Customers Telephone Bill

#include<stdio.h>
void main()
{
int units, custno;
float charge;
clrscr();
printf("Enter customer number and unit consumed\n");
scanf("%d%d",&custno,&units);
if(units<=200)
charge=0.5*units;
else if(units<=400)
charge=100+0.25*(units-200);
else if(units<=600)
charge=230+0.8*(units-400);
else
charge=390+(units-600);
printf("Customer no:%d consumed :%d units\n",custno,units);
printf("Total bill amount is : %.2f\n",charge);
}

Program to Perform all the Arithmetic Operations

#include<stdio.h>
main()
{
int first,second,Add,Sub,Mul;
float Div;
clrscr();
printf("Enter two integer numbers\n");
scanf("%d%d",&first,&second);
Add=first+second;
Sub=first-second;
Mul=first*second;
Div=first/second;
printf("Sum=%d\n",Add);
printf("Difference=%d\n",Sub);
printf("Multiplication=%d\n",Mul);
printf("Division=%f\n",Div);
return 0;
}

Program to Calculate Simple Interest and Compound Interest

#include<stdio.h>
#include<math.h>
int main()
{
float p,q,r,smpi,cmpi;
int  n;
clrscr();
printf("Enter the value of principle p = ");
scanf("%f",&p);
printf("Enter the value of rate r = ");
scanf("%f",&r);
printf("Enter the value of period in year n = ");
scanf("%d",&n);
smpi=((p*r*n)/100);
printf("The Simple Interest is=%f \n",smpi);
q=1+(r/100);
cmpi=p*pow(q,n)-p;
printf("The Compound Interest is=%f \n",cmpi);
return 0;
getch();
}

OUTPUT:-

Program To Perform Logical Operator

#include<stdio.h>
#include<conio.h>
main()
{
int a,b,c;
clrscr();
printf("Enter the value of a,b and c\n");
scanf("%d%d%d",&a,&b,&c);
if((a>b)&&(b>c))
printf("\na is greater than b =%d",a);
else
printf("\nb is greater than a =%d",b);
if(a>c)
printf("\na is greater value than c =%d",a);
else
printf("\nc is greater value than a =%d",c);
if((a==b)||(a==c))
printf("\na value is equal to b");
else
printf("\nvalues are not equal");
getch();
}                 

Program To Perform Relational Operator

#include<stdio.h>
#include<conio.h>
main()
{
int x,y,z;
clrscr();
printf("Enter the values of x,y and z\n");
scanf("%d%d%d,",&x,&y,&z);
if(x==y)
printf("\nBoth the values are same =%d",x,y);
if(x>y)
printf("\nThe value of x is greater =%d",x);
else
printf("\nThe value of y is greater =%d",y);
if(y!=z)
printf("\nThe value of y is not equal to =%d",y);
getch();
}

SWAPPING OF TWO VALUES WITHOUT USING THIRD VARIABLE

#include<stdio.h>
#include<conio.h>
main()
{
int a=8, b=12;
clrscr();
printf("Before swap of two numbers a=%d b=%d\n",a,b);
a=a+b;
b=a-b;
a=a-b;
printf("After swap of numbers a=%d b=%d",a,b);
getch();
}

PROGRAM TO FIND GEOMETRIC MEAN

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

    int a[10],n,i;

    double sum=0, gm;

    clrscr();

    printf("Enter the total no. of elements");

    scanf("%d",&n);

    printf("Enter the elements\n");

    for(i=0;i<n;i++)

       scanf("%d",&a[i]);

    for(i=0;i<n;i++)

       sum =sum+(log10(a[i]));

    gm=exp(sum/n*log(10));

    printf("Geometric mean is %f",gm);

    getch();

}

PROGRAM TO FIND ARITHMETIC MEAN

#include<stdio.h>

#include<conio.h>

void main()

{

   int a[50],n,i,s;

   float mean;

   clrscr();

   printf("enter how many terms u want to enter\n");

   scanf("%d",&n);

   printf("enter %d terms\n",n);

   for(i=0;i<n;i++)

     scanf("%d",&a[i]);

     s=0;

     for(i=0;i<n;i++)

     s+=a[i];

     mean=s/n;

     printf("mean is %f",mean);

     getch();

}

Program to read name of a employee, employee number and salary from the keyboard and writes same to binary file

#include<stdio.h>

struct employee

{

          int eno,salary;

          char name[20];

}        

main()

{

          struct employee e;

          char ans;

          FILE *fp;

          fp=fopen("file9.out","wb");

          if(fp==NULL)

          {

                   printf("Error in file opening");

                   exit(0);

          }

          do

          {

                   printf("\nEmployee No.");

                   scanf("%d",&e.eno);

                   printf("\nName :");

                   scanf("%s",&e.name);

                   printf("\nSalary");

                   scanf("%d",&e.salary);

                   fwrite(&e,sizeof(e),1,fp);

                   printf("\nDo you want to add more records y/n");

                   ans=getch();

          }while(ans !='n');

          fclose(fp);

}

Program to demonstrate pointer to structure

#include<stdio.h>

main()

{

          struct student

          {

                   int roll;

                   char name[20];

                   int age;

                   char class[8];

          };        

          struct student s,*ptr;

          ptr=&s;

          printf("Enter the student record\n");

          printf("Roll no. :");

          scanf("%d",&ptr->roll);

          printf("Name :");

          scanf("%s",&ptr->name);

          printf("Age:");

          scanf("%d",&ptr->age);

          printf("Class :");

          scanf("%s",&ptr->class);

          printf("\n Record details are\n");

          printf("Roll no: %d\n",ptr->roll);

          printf("Name: %s\n",ptr->name);

          printf("Age: %d\n",ptr->age);

          printf("Class : %s\n",ptr->class);

}

Program to show nesting of macros

#include<stdio.h>

#define SQU(x)((x)*x)

#define CUBE(x)(SQU(x)*x)

int main()

{         

          int x,y;

          clrscr();

          x=SQU(3);

          y=CUBE(3);

          printf("\nSquare of 3 : %d",x);

          printf("\nCube of 3 : %d",y);

          return(0);

}

Program to demonstrate pointer to function

#include<stdio.h>

main()

{

          void mess();

          void (*ptr)();

          ptr=mess;

          clrscr();

          printf("Address of the function is %d\n",ptr);

          (*ptr)();

}             

      void mess()

      {

          printf("I am in the subprogram\n");

      }

Program to demonstrate enumerated data types.

#include<stdio.h>

enum month {Jan,Feb,Mar,Apr,May,June,July,Aug,Sep,Oct,Nov,Dec,Next};

main()

{

          int m;

          float pay,sum=0;

          printf("\n");

          for(m=Jan;m<=Dec;m++)

          {

                   printf("Enter the pay of month %d :",m+1);

                   scanf("%f",&pay);

                   sum+=pay;

          }

          printf("Total Salary =%f",sum);

}

Program to demonstrate dynamic memory allocation

#include<stdio.h>

#include<string.h>

#include<stdlib.h>

main()

{

          char *mem_allocation;

          clrscr();

          mem_allocation= malloc( 20* sizeof(char));

          if(mem_allocation==NULL)

          {

           printf("couldn't able to allocate requested memory\n");

          }

          else

          {

                   strcpy(mem_allocation,"Besties");

      }

      printf("Dynamically allocated memory                                  content:""%s",mem_allocation);

           free(mem_allocation);

}

Program to demonstrate use of #define

 #include<stdio.h>

#define NAME "vokytoky"

#define AGE 15

int main()

{       clrscr();

          printf("%s is over %d years old.\n",NAME,AGE);

          return 0;

}

Program to demonstrate conditional compilation.

#include<stdio.h>

int main()

{              

          int i=2;

          clrscr();

          #ifdef DEF

          {

                   i*=i;

          }

          #else

          {

                   printf("The answer is %d\n",i);

          }

          #endif

          return 0;

}

Program to demonstrate array of strings

#include<stdio.h>

#include<string.h>

void main()

{                  

          char name[35][21];

          int n,i;

          clrscr();

          printf("Enter numbers of students");

          scanf("%d",&n);

          printf("Enter the %d students name\n",n);

          for(i=0;i<=n;++i)

          {

                   gets(name[i]);

          }

     printf("\n List of students is");

          for(i=0;i<=n;++i)

          puts(name[i]);

}

Program to store record of 'n' employees/students

#include<stdio.h>

main()

{

          struct employee                                           

          {                                                         

                   char name[20];                                   

                   int basic;                                       

          };                                                        

          struct  employee e[10];                                   

          int n,i;                                                  

          float da[10],hra[10],total[10];                           

          clrscr();                                                 

          printf("Enter the number of employees :");                

          scanf("%d",&n);                                           

          for(i=1;i<=n;++i)                                         

          {                                                         

                   printf("\nEnter the data of employee %d\n",i);   

                   printf("Name :");                                

                   scanf("%s",&e[i].name);                          

                   printf("Basic Pay :");                           

                   scanf("%d",&e[i].basic);                         

                   da[i]=e[i].basic * 0.37;                         

                   hra[i]=e[i].basic * 0.1;                         

                   total[i]=e[i].basic+da[i]+hra[i];                

           }                                                        

          printf("Name     Basic Pay DA       HRA      TOTAL\n");   

          for(i=1;i<=n;++i)                                         

          {                                                         

                                                                     printf("%s%6d%10.2f%10.2f%10.2f\n",e[i].name,e[i].basic,da[i],hra[i],total[i]);                                                        

          

          }                                                         

}