编辑代码

#include <stdio.h>

int main () {
    void *getNum(int (*stu)[3],int n);
    int a[][4] = {{50,60,70,80},{55,66,77,88},{66,84,90,99}};
    int *p;
    p = getNum(a,0);
    for(int i = 0;i<4;i++)
        printf("%d",*(p+i));
}

void *getNum(int (*stu)[3],int n){
    int *pt;
    pt = *(stu + n);
    return pt;
}