函数调用

#include <stdio.h>



/* function declaration */

int max(int num1, int num2);



int main () {



   /* local variable definition */

   int a = 100;

   int b = 200;

   int ret;



   /* calling a function to get max value */

   ret = max(a, b);



   printf( "Max value is : %d\n", ret );



   return 0;

}



/* function returning the max between two numbers */

int max(int num1, int num2) {



   /* local variable declaration */

   int result;



   if (num1 > num2)

      result = num1;

   else

      result = num2;



   return result;

}