bNxkIE - Online C Compiler & Debugging Tool

#include <stdio.h>
#include <stdlib.h>

int myStrlen(char s[]){
    int i;
    for(i=0;s[i]!='\0';i++);
    return i;
}


char *setPalindrome(char s[]){
	 int len = myStrlen(s);
    int total = len * 2;
    char *tmp = malloc(total + 1);

    int i;


    for(i = 0; i < len; i++){
        tmp[i] = s[i];
    }


    for(i = 0; i < len; i++){
        tmp[len + i] = s[len - 1 - i];
    }


    tmp[total] = '\0';

    return tmp;
}


int main(){
    int i;
    char nyuryoku[1024];
    char *kaibun;
    scanf("%s",nyuryoku);
    kaibun = setPalindrome(nyuryoku);
    printf("%s\n  -> %s\n",nyuryoku,kaibun);
    free(kaibun);
    return 0;
}