devc++

[cemock]

I wrote this program and it compiles alright but when I try to run it the screen comes up and ask for dia. then I input dia. and a message comes up saying that this program has preformed an illegal operation. Can ne1 help me

#include <stdio.h>

int main()

{

int num1, sum, dia;

printf ( "Enter the radius of the circle and\n" );
printf ( "it will tell u the diamenter\n" );
scanf ("%d, %num1" );
sum = 2 * num1;
printf ( "dia is %d\n", dia );

return 0;

}

[orbitz]

scanf ("%d, %num1" );

Learn how to use scanf

printf ( "dia is %d\n", dia );

Where do you set dia?

[cemock]

I am trying to learn how to use scanf just got into this C programing class and am learning what did I do wrong

[Vber]

Instead:

scanf("%d",%num);

Write:

scanf("%d",&num);

You'll learn about the & operator, when you'll start to deal with pointers.