Submission #1318075

---

Source Code Expand

#include<stdio.h>
#include<string.h>
int main(){
char s[100010],i;
scanf("%s",s);
for(i=0;s[i];i++)printf("%c",i?tolower(s[i]):toupper(s[i]));
printf("\n");
return 0;
}

Submission Info

Compile Error

./Main.c: In function ‘main’:
./Main.c:6:32: warning: implicit declaration of function ‘tolower’ [-Wimplicit-function-declaration]
 for(i=0;s[i];i++)printf("%c",i?tolower(s[i]):toupper(s[i]));
                                ^
./Main.c:6:46: warning: implicit declaration of function ‘toupper’ [-Wimplicit-function-declaration]
 for(i=0;s[i];i++)printf("%c",i?tolower(s[i]):toupper(s[i]));
                                              ^
./Main.c:5:1: warning: ignoring return value of ‘scanf’, declared with attribute warn_unused_result [-Wunused-result]
 scanf("%s",s);
 ^

Judge Result