C Programming
C is a procedural general purpose programming language that was developed by Dennis Ritchie at the Bell Laboratories in 1972 for the purpose of developing Unix Operating System.
The Structure of C program is:
#include<stdio.h> //header file
int main() // Main function or main method
{
int a; // declaration of variable
printf(“enter a number: “);// display
scanf(“%d”,&a); //read by compiler
printf(“entered number is %d”,a); //display entered number
return 0 // int main does not return null value
}
Datatypes refers to the type of data. There are various types of data used in c programming. some of them are:
Datatypes keywords format specifier example
Integer int %d int a=10;
Floating point float %f float a=10.5;
Double double %1f double a=10.005;
String char %s char a=”helloword”;
Character char %c char a=’h’;
Write a c program to calculate Simple Interest by declaring value
#include<stdio.h>
int main()
{
int p=4000,t=2,r=3,SI;
SI=(p*t*r)/100;
printf(“the simple interest is %d”,SI);
return 0;
}
Write a c program to calculate Simple Interest by getting values from user.
#include<stdio.h>
int main()
{
int p,t,r,SI;
printf(“enter the principal: “);
scanf(“%d”,&p);
printf(“enter the time: “);
scanf(“%d”,&t);
printf(“enter the rate: “);
scanf(“%d”,&r);
SI=(p*t*r)/100;
printf(“the simple interest is %d”,SI);
return 0;
}
Write a program in c language to ask length, breadth, and height and display the volume of the box.
#include<stdio.h>
int main()
{
int L,b,h,volume;
printf(“enter the length: “);
scanf(“%d”,&L);
printf(“enter the breadh: “);
scanf(“%d”,&b);
printf(“enter the height: “);
scanf(“%d”,&h);
volume=L*b*h;
printf(“the simple interest is %d”,volume);
return 0;
}
Write a program in c language that ask for a number and checks whether it is odd or even.
#include<stdio.h>
int main()
{
int n;
printf(“enter the number: “);
scanf(“%d”,&n);
if(n%2==0)
{
printf(“%d is even number”,n);
}
else
{
printf(“%d is odd number”,n);
}
return 0;
}
Write a C program to find the sum of first 10 natural numbers.
#include<stdio.h>
int main()
{
int i,sum=0;
for(i=1;i<=10;i++)
{
sum=sum+i;
}
printf(“the sum of the first natural number is %d”,sum);
return 0;
}
Write a C program to find the factorial of a given number?