#include <stdio.h>
int main(void) {
int i;
char s[100];
// ここで文字列中の '1' を 'I' に置き換える
for(i = 0; s[i] != '\0'; i++) {
if(s[i] == '1') {
s[i] = 'I';
}
}
return 0;
}
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