What's wrong with my code?

Question

Q:-Write a C program to multiply three numbers and print the result. Here two numbers have to be taken through assignment statements and the third as a user input.
My code
#include <stdio.h>
void main()
{
int a=7,b=8,c,d;
printf("input third number");
scanf("%d", &c);
d = a*b*c;
printf(" product = %d", d);
}

Answer 1

Sohini Giri, Sec A,Roll No.-05
Your code is correct..
but,
Just change in second line..
Use this `int main()`,instead of `void main`,
because this program execute an integer value.

Answer 2

please write 'int main()' instead of 'void main()'