#include <stdio.h>
int main() {
char arr1[20], arr2[20];
int cnt = 0; //cnt: 글자 수
scanf("%s", arr1);
for(int i = 0; arr1[i] != '\0'; i++)
cnt++; //글자 수 Array = 5
for(int i = cnt-1, j = 0; i >= 0 && j < cnt; i--, j++) { //cnt = 5
arr2[j] = arr1[i];
}
arr2[cnt] = '\0';
printf("%s", arr2);
return 0;
}
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