Make program to square the numbers from 1 to 20

[Bisyar khub]

hello,...i want to make program to square the numbers from 1 to 20. i have written this program, it's running but not giving the required answer.i think it is giving a garbage value...please tell me where is the issue....I'm very basic programmer studying C++...hope you'll response soon

void main(void)
{int a;
  int  b;
b=a*a;
for (a=1; a<21; a++)
{printf("%d",b);
printf("the square is%d=b");
}
getche();}

[weaknessforcats]

Your calculation of the square is outside your loop.

[sgayathri2412]

printf("the square is%d=b");

//statement wrong.It should be

printf("the square is %d",b);

//if not garbage value only returns.