范型算法求最高成绩代码

#include
#ifndef GENERICS_H
#define GENERICS_H

typedef int (*cmp_t)(void *, void *);
extern void *max(void *data[], int num, cmp_t cmp);

#endif

void *max(void *data[], int num, cmp_t cmp)
{
     int i;
     void *temp = data[0];
     for(i=1; i       if(cmp(temp, data[i])<0)
           temp = data[i];
     }
     return temp;
}
typedef struct {
     const char *name;
     int score;
} student_t;

int cmp_student(void *a, void *b)
{
     if(((student_t *)a)->score > ((student_t *)b)->score)
      return 1;
     else if(((student_t *)a)->score == ((student_t *)b)->score)
      return 0;
     else
      return -1;
}

int main(void)
{
     student_t list[4] = {{"Tom", 68}, {"Jerry", 72},
               {"Moby", 60}, {"Kirby", 89}};
     student_t *plist[4] = {&list[0], &list[1], &list[2], &list[3]};
     student_t *pmax = max((void **)plist, 4, cmp_student);
     printf("%s gets the highest score %d\n", pmax->name, pmax->score);

     return 0;
}