Do While Loop Statement in C

Do While executes a statement repeated until the value of the condition expression becomes false.

Syntax:

do
{
  statement 1;
  statement 2;
    ………….
  statement n;
}
While (condition);

Flow Digram.

Example 1

 #include <stdio.h>
int main(){
  int number, total=0;
  printf("\n Please Enter any integer below 10 \n");
  scanf("%d", &number);
  do {
     total = total + number;
     printf(" Number = %d\n", number);
     printf(" Total Value is: %d\n", total); 
     number++;
   }
   while (number< 10);
  printf(" Total Value from outside the Loop is: %d \n", total);
  return 0;
}

Output

Example 2

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

Output

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

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Do While Loop Statement in C

Example 1

Example 2