求c语言算加权平均分的代码

//经过调试，可以运行
#include"stdio.h"
#include "ctype.h"
#define NAME_LEN 999
#define MAX_PRO 999
int num_parts = 0;
float total_hours = 0,ave_marks = 0;
struct
{
char pro_name[NAME_LEN+1]