What's wrong with Experiment 7 8999

the reference answer GPT ᴼ ᴾ ᴱ ᴺ ᴬ ᴵ < br / > this code is a brace position error, there was a problem leads to read input. Specifically, the following line of code:

while(scanf("%d",& n! =EOF))

should be changed to:

while(scanf("%d",& n)! =EOF)

puts the parentheses that determine whether the input ends in the correct position. The modified code is as follows:

#include 
#include 
#include 

int main()
{
    int n;
    while(scanf("%d",&n)!=EOF)
    {
        char a[30][30];
        char t[30];
        int i,j;
        for(i=0;iscanf("%s", a[i]);
        for(i=1;ifor(j=0;jif(strcmp(a[j],a[j+1])>0)
                {
                    strcpy(t,a[j]);
                    strcpy(a[j],a[j+1]);
                    strcpy(a[j+1],t);
                }
        }
        for(i=0;iprintf("%s ",a[i]);
        printf("\n");
    }
    return 0;
}

Also, it is recommended to use scanf with a limit on the maximum read length to avoid array out-of-bounds problems. For example:

scanf("%29s", a[i]);  // 最大读入长度为29

line 7 the scanf(" % d", & amp; n! =EOF) instead of
(scanf("%d",& n)! =EOF)