100% c prog to illustrate usage of 'while loop'

/*program to print multiplication tables of given integers using "while(condition )"*/
#include <stdio.h>
void main()
{    
 int n,i,flag=4; //flag value can be any non zero
 while(flag)
 {
   printf("\n enter a integer whose multiplication table is required:");
   scanf("%d",&n);
   for(i=1;i<11;i++)
   {
     printf("\n %3d * %2d= %3d",n,i,n*i);
   }
   printf("\n enter 0 to stop, else enter other number to continue:");
   scanf("%d",&flag);
 };
}
ఔట్పుట్  ఈ కింది విధంగా కనపడును.. 
enter a integer whose multiplication table is required:7
7 *  1=   7
   7 *  2=  14
   7 *  3=  21
   7 *  4=  28
   7 *  5=  35
   7 *  6=  42
   7 *  7=  49
   7 *  8=  56
   7 *  9=  63
   7 * 10=  70
 enter 0 to stop, else enter other number to continue:2
 enter a integer whose multiplication table is required:14
 14 *  1=  14
  14 *  2=  28
  14 *  3=  42
  14 *  4=  56
  14 *  5=  70
  14 *  6=  84
  14 *  7=  98
  14 *  8= 112
  14 *  9= 126
  14 * 10= 140
 enter 0 to stop, else enter other number to continue:0