Loops in C

In C Programming Language, a Loop is used to execute a block of a statement repeatedly.

Types of Loops in C Programming Language:-

1. While Loop
2. Do While Loop
3. For Loop

do while loop

The do while loop in C Language checks the condition at the base of the loop. It execute the loop inside the body once at-least for one time.

The syntax of Do while loop in C Language is written below:-

do {
     statement (s);
}    while( condition);

Let’s take a look at do while loop example:-

#include <stdio.h>
int main () {
int a = 10;
d {
    printf('value of a: %d\n', a);
    a = a + 1;
    } while( a < 20 );
 return 0;


value of a: 10
value of a: 11
value of a: 12
value of a: 13
value of a: 14
value of a: 15
value of a: 16
value of a: 17
value of a: 18
value of a: 19


while loop

The while loop in C Programming Language repeatedly executes the statement until the given condition is true.

Syntax of While Loop in C Programming Language. Read it below:-

while (condition test)
          / / Statements to be executed repeatedly
         / / Increment (++) or Decrement ( - - ) operation
Example of while loop:
#include <stdio.h>
int main  () 
  int count = 1;
  while (count <= 4)
   printf("%d ", count);
   return 0;

1 2 3 4

for While Loop

The syntax of for While Loop in C Programing Language. Read it below:-

for (initialization; condition test; increment or decrement)
    / / Statements to be executed repeatedly

Example of For Loop

#include <stdio.h>
 int main()
 int  i;
 for (i=1; i<=3; i++)
 printf("%d\n", i);
 return 0;


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