Как сделать?

sending IMStart with 0 chars to 0x8334f88
sending IMEnd with 1 chars to 0x8334f88, text=~

 printf(¨ff¨);
Вывод при компиляции gcc -c shuffle.c
shuffle.c: In function `shuffle':
shuffle.c:28: error: stray '\180' in program
shuffle.c:28: error: stray '\180' in program
shuffle.c:28: error: `ff' undeclared (first use in this function)
shuffle.c:28: error: (Each undeclared identifier is reported only once
shuffle.c:28: error: for each function it appears in.)

#include <stdio.h>
int main()
{
    printf(¨ff¨);
}

#include <stdio.h>
int main()
{
    printf("ff");
}