how can I optimize this code so it won't use much RAM while compiling?

Question

so basically the exercise's telling me to initialize an array and then display the elements while separing it with a comma.

#include <stdio.h>
int main(){
   int Tab [5] = {5, 6, 0, 1, 5};
   int i;
   for (i=0 ; i<5 ; i++){
       printf("%d", Tab[i]);
       if (i < 4){
           printf (" ,");
       }
   }
return 0;

}

My teacher told me that the problem is in the 'if statement', but I don't know how could I optimize it.

Answer 1

I'm not sure if it will help, because I don't see nothing wrong with the if in terms of RAM, but if your teacher told you that the if is the problem, then you can get rid of it:

for (i=0 ; i<4 ; i++){
    printf("%d ,", Tab[i]);
}
printf("%d", Tab[i])