Tinh tong tu so 1 den so 20

/* Tinh tong cac so tu 1 den 20 */
#include<stdio.h>
#include<conio.h>
main() {
int count=0;
int tong=0;
while (count<=20)
{
tong+=count;
printf("count = %d, tong = %d \n\n",count++,tong);
}
getch();
}