C – Do While Loop

do-while: Executes a block at least once and continue iteration until condition is false.

Syntax:

do {             statements; } while(condition);

Flow Chart :

Check Even numbers until user exits:

#include<stdio.h> #include<conio.h> int main() {             int n;             char ch;             do{                         printf(“\nEnter number : “);                         scanf(“%d”, &n);                                                 if(n%2==0)                                     printf(“%d is even \n”, n);                         else                                          printf(“%d is odd \n”, n);                                                 printf(“Do you want to check another num(y/n) : “);                         ch = getch();                                                 }while(ch!=’n’);             return 0;           }

getch():

• getch() is a pre-defined method belongs to conio.h header file.
• It is used to read character from the console while program is running.