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

1 do while loop

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

Syntax:

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

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

2 while loop

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

Syntax:

while  (Condition test)
{
   // Statements to be executed repeatedly
   // Increment (++) or Decrement ( - - ) operation
}

Example:

#include <stdio.h>
int main  () 
{
  int count = 1;
  while (count <= 4)
{
  printf("%d ", count);
  count++;
  } 
  return 0;
}

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3 for While Loop

The syntax of for While Loop in C Programing Language:

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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