关于i++

代码：
int main(void)
{
int i = 0;
for (i = 0; i < 10; i++)
{
printf("i = %d\n", i);
}

return 0;
}

gdb调试：
Breakpoint 1, main () at 1.c:6
6 for (i = 0; i < 10; i++)
(gdb) s
8 printf("i = %d\n", i);
(gdb)
__printf (format=0x8048500 "i = %d\n") at printf.c:30
30 printf.c: No such file or directory.
in printf.c
(gdb)