A simple “for” command doesnt work using only the stdio library-Collection of common programming errors

Using the same machine and IDE as reffered in my other question (third paragraph at Problems in code or my IDE/comp is bugged?)

I try to run this code:

#include 
#define n 3
int main()
{
    int i;
    float values[n],sumval,svmean,tmp;
    for(i=0;i