#include<stdio.h>
main()
{
int i,s=0;
i=1;
while(i<=100)
{ s=s+i; i=i+1; } printf("1+2+3...+100=%d\n",s); }
main()
{
int i,s=0;
i=1;
while(i<=100)
{ s=s+i; i=i+1; } printf("1+2+3...+100=%d\n",s); }