Submission #1420147

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Source Code Expand

#include <stdio.h>

char s[13];

void lower(int x) {
    if (s[x] >= 'A' && s[x] <= 'Z') {
        s[x] -= 'A' - 'a';
    }
}

void upper(int x) {
    if (s[x] >= 'a' && s[x] <= 'z') {
        s[x] -= 'a' - 'A';
    }
}

int main(void) {
    int i;
    
    scanf("%s", s);
    
    for (i = 0;; ++i) {
        if (s[i] == '\0') break;
        
        if (i == 0)
            upper(i);
        else
            lower(i);
    }
    
    printf("%s\n", s);
    return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:20:5: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%s", s);
     ^

Judge Result