例4-82

#include<stdio.h>
int main(void)
{
    int mark,max;

    printf("Enter marks:");
    scanf_s("%d",&mark);
        max=mark;

    while(mark>=0){
        if(max<mark)
            max=mark;
        scanf_s("%d",&mark);
    };
    printf("Max=%d\n",max);

    return 0;
}