#include <stdio.h>
#include <stdlib.h>
 
int myStrlen(char s[]){
    int i;
    for(i=0;s[i]!='\0';i++);
    return i;
}
 
// 関数の中でtmpに対してmallocして
// そこに回文を代入してreturnで返しましょう
char *setPalindrome(char s[]){
	char *tmp;
	//以下に必要な宣言を含めて書いてください
    int i=myStrlen(s);
    int k=i-1;
    int j;
    tmp=(int *)malloc(sizeof(char)*i);
 
    for(int j=0;j<i;j++){
        tmp[j]=s[k];
        k--;
    }
 
    return tmp;
}
 
 
//メイン関数はいじる必要はありません
int main(){
    int i;
    char nyuryoku[1024]; //入力
    char *kaibun;   //回文を受け取る
    scanf("%s",nyuryoku);
    kaibun = setPalindrome(nyuryoku);
    printf("%s\n  -> %s\n",nyuryoku,kaibun);
    free(kaibun);
    return 0;
}
 

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

YWJjZA==

abcd