Added assignment function

#include <stdio.h>
void main {
int var = 3;
3 5 +;
// end
/* comment 2 */
float k;
k = 3.2;
}
Added global variable

#include <stdio.h>
int k = 5;
void main {
int var = 3;
3 5 +;
// end
/* comment 2 */
}