C Programming codes are not working,need help please

Question

Hi There,

I am doing C language recently and I typed these codes belwo but there is somehting that I do not understand.

It is still not working, couls some one help me please:

#include <stdio.h>
int i;
int main () {
 for (i=10; i>=1; i --)}
 printf("%d ",i);
 }
}