C :

#include<stdio.h>
int main(){
int i,sum=0;
for(i=1;i<=100;i++)
  sum+=i;
printf("%d\n",sum);
return 0;
}

C++ :

#include <stdio.h>
int main() {
	int i, sum;
	sum = 0;
	for (i = 1;i <= 100;i++)
		sum += i;
	printf("%d\n", sum);
	return 0;
}

Pascal :

begin
  writeln('5050');
  end.

Java :

import java.util.*;
public class Main {
	public static void main(String args[]) {
		int s=0;
		for(int i=1;i<=100;i++)
			s+=i;
		System.out.printf("%d\n",s);
	}
}

Python :

print 5050