求三个数中的最大值

#include<stdio.h>int maxmum(int x, int y, int z);   /*说明一个用户自定义函数*/int main(){    int i, j, k;    printf("i, j, k=?\n");    scanf("%4d%4d%4d", &i, &j, &k);    maxmum(i, j, k);    getch();    return 0;}maxmum(int x, int y, int z){    int max;    max=x>y?x:y;    max=max>z?max:z;    printf("The maxmum value of the 3 data is %d\n", max);}