Submission #1419443

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Source Code Expand

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

char a[11];

int main(void) {
        scanf("%s", a);
        a[strlen(a) - 1] -= 1;
        if (a[strlen(a) - 1] == 'a' - 1)
                a[strlen(a) - 1] = '\0';
        if (strlen(a) == 0)
                strcpy(a, "-1");
        printf("%s\n", a);
        return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:7:9: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
         scanf("%s", a);
         ^

Judge Result