Question

I was trying to make a simple c calculator because i am a newbie and thought it would be a good idea. This is my code:

#include <stdio.h>
main()
{
 char b;
 int a,c,d;
 printf("Please enter your first number: ");
 scanf("%d",&a);
 printf("Please enter your second number: ");
 scanf("%d",%c);
 printf("Enter your operation");
 scanf("%c",&b);
 if (b == 'a')
 {
     d = a + c;
     printf("The answer is: %d",d);
 }
}

When i compile the code this is the error/warnings i get:

D:...|4|warning: return type defaults to 'int'|
D:...||In function 'main':|
D:...|10|error: expected expression before '%' token|

Can someone please help?

Answer 1

Change the % to a & in the scanf:

scanf("%d", &c);
            ^

Also, instead of main you want int main and you probably should return something at the end.