#define _CRT_SECURE_NO_WARNINGS 1 #include<stdio.h> #include<string.h> int main() { char arr[50]; gets_s(arr); int len = strlen(arr); for (int i = 0; i <= len / 2; i++) { char c; c = *(arr + i); *(arr + i) = *(arr + len - 1 - i); *(arr + len - 1 - i) = c; } printf("%s", arr); } /* Main.c: In function 'main': Main.c:7:2: warning: implicit declaration of function 'gets_s' [-Wimplicit-function-declaration] gets_s(arr); ^ /tmp/cchhwHA1.o: In function `main': Main.c:(.text+0x15): undefined reference to `gets_s' collect2: error: ld returned 1 exit status */ |
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