// first.c
#include <stdio.h>
int main(void)                /* a simple program             */
{
    int num;                  /* define a variable called num */
    num = 1;                  /* assign a value to num        */
    
    printf("I am a simple "); /* use the printf() function    */
    printf("computer.\n");
    printf("My favorite number is %d because it is first.\n",num);
    
    return 0;
}