//the syntax of the for loop statement is: for(init;condition;inc/dec) {statement(s)}
//init=initialization
//inc=increment|incrementation formula is i++ or ++i
//dec=decrement|decrementation formula is i-- or --i
#include<stdio.h>
main()
{
int n;
for(n=1;n<=4;n++)
{
printf("%d, ",n);
}
printf("%d.",n);
}