c - 运行时 scanf 函数的垃圾值无法正常工作

Question

下面的 C 程序不会抛出错误，但也不工作，并给出垃圾值。请告诉我为什么？

我正在使用Codeblock编辑器。当我在程序中不使用数组时，程序运行良好。但是我已经仔细阅读了它，没有发现任何错误。

#include<stdio.h>

int main(){
    char name1[27];
    int maths;
    int physics;
    int Cs;
    int bio;
    int english;
    int urdu;
    int ps;
    int isl;

    printf("What is your name : ");
    scanf(" %s",name1);
    printf("\n\nwhat is your score in Mathematics : ");
    scanf(" %d",&maths);
    printf("\n\nwhat is your score in physics : ");
    scanf(" %d",&physics);
    printf("\n\nwhat is your score in computer science : ");
    scanf(" %d",&Cs);
    printf("\n\nwhat is your score in biology : ");
    scanf(" %d",&bio);
    printf("\n\nwhat is your score in English : ");
    scanf(" %d",&english);
    printf("\n\nwhat is your score in Urdu : ");
    scanf(" %d",&urdu);
    printf("\n\nwhat is your score in Pakistan study : ");
    scanf(" %d",&ps);
    printf("\n\nwhat is your score in Islamiat : ");
    scanf(" %d",&isl);

    printf("\n****************************************************************************************");
printf("\nName            Mathematics    Physics    Com.sc    Biology    English    Urdu    Pak-Study    Islamiat");
    printf("\n****************************************************************************************");
    printf("\n%-16s%-15d%-11d%-10d%-11d%-11d%-8d%-13d%0d",name1,maths,physics,Cs,bio,english,urdu,ps,isl);
    return (0);
}

Answer 1

如果问题是输入带有空格的姓名，例如姓名和姓氏，您应该使用 fgets检索输入字符串并手动删除换行符

#include<stdio.h>
#include <string.h>

int main(void)
{
    char name1[27];
    int maths;
    int physics;
    int Cs;
    int bio;
    int english;
    int urdu;
    int ps;
    int isl;

    printf("What is your name : ");
    fgets(name1, sizeof(name1), stdin);
    name1[strcspn(name1, "\n")] = 0;

    printf("\n\nwhat is your score in Mathematics : ");
    scanf(" %d",&maths);
    printf("\n\nwhat is your score in physics : ");
    scanf(" %d",&physics);
    printf("\n\nwhat is your score in computer science : ");
    scanf(" %d",&Cs);
    printf("\n\nwhat is your score in biology : ");
    scanf(" %d",&bio);
    printf("\n\nwhat is your score in English : ");
    scanf(" %d",&english);
    printf("\n\nwhat is your score in Urdu : ");
    scanf(" %d",&urdu);
    printf("\n\nwhat is your score in Pakistan study : ");
    scanf(" %d",&ps);
    printf("\n\nwhat is your score in Islamiat : ");
    scanf(" %d",&isl);

    printf("\n****************************************************************************************");
    printf("\nName            Mathematics    Physics    Com.sc    Biology    English    Urdu    Pak-Study    Islamiat");
    printf("\n****************************************************************************************");
    printf("\n%-16s%-15d%-11d%-10d%-11d%-11d%-8d%-13d%0d",name1,maths,physics,Cs,bio,english,urdu,ps,isl);
    return (0);
}