Thread: Basic compiling problem for a beginner

Im having problems with this code compiling:

Code:

#include <stdio.h>

int main(void)
{
   int i = 0, n = 0, sum = 0;

       
   printf("\n%s", "Enter an integer. \n");  
   scanf("%d", &i);
	    
   for (i > 0) 
	{
		n = (2 * i); 
	   for (i = 1; i <= n; ++i)
		   sum += i;               
	 printf("sum = %d\n\n", sum); 
   }
	
   /* for (i < 0) 
	{
	n = (2 * i) 
	   for (i = 1; i <= n; ++i)
		   sum += i;               
	 printf("sum = %d\n\n", sum);); 
   }
 */
   
   
   return 0;
}

The errors are:
v1.c: In function 'main':
v1.c:15: error: parse error before ')' token
v1.c: At top level:
v1.c:33: error: parse error before 'return'

line 15 is the line with "for (i > 0)". I commented out the second major for loop to simplify troubleshooting.
What boneheaded thing did I do to get these parse errors?
Any help appreciated,
crazychile

for (i < 0) is invalid. Perhaps you meant while?

http://www.cprogramming.com/tutorial/c/lesson3.html

Both of your replies were very helpful. I need to write two versions of this. one using only for loops, and the other using only while loops. Your comments help me differentiate the two .

Thank you very much!