Submission #914121

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Source Code Expand

#include <cstdio>

const int maxn = 20;

int main() {
    char buf[maxn];
    scanf("%s", buf);
    for (int i = 0; i < 12; ++i) {
        if (i == 4) printf(" %c", buf[i]);
        else printf("%c", buf[i]);
    }
    printf("\n");
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:21: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s", buf);
                     ^

Judge Result