#include <stdio.h>
#include <string.h>

void r(char str[])
{
    int len=strlen(str);
    str[len-1]=0;
}

int main() {
    char str[100];
    printf("문자열 입력: ");
    fgets(str, sizeof(str), stdin);
    printf("길이: %ld, 내용: %s \n", strlen(str), str);

    r(str);
    printf("길이: %ld, 내용: %s \n", strlen(str), str);

    return 0;
}

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