我意识到这可能已经回答了,但我就是找不到。使用“make”编译以下文件时:
#include <cs50.h>
#include <stdio.h>
#include <string.h>
int main(void)
{
// get line of text
string s = GetString();
// print string, one character per line
for (int i = 0; i < strlen(s); i++)
{
char c = s[i];
printf("%c\n", c);
}
return 0;
}
我收到以下消息:
$ make example
cc example.c -o example
Undefined symbols for architecture x86_64:
"_GetString", referenced from:
_main in example-iPNXBe.o
ld: symbol(s) not found for architecture x86_64
clang: error: linker command failed with exit code 1 (use -v to see invocation)
make: *** [example] Error 1