C :

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

C++ :

#include <bits/stdc++.h>
using namespace std;

int main(){
	for(int i = 1;i <= 100;i++){
		cout<<i<<endl;
	}
}

Java :

import java.util.Scanner;

public class Main {
	public static void main(String[] args) {
		for(int i=1;i<=100;i++) {
				System.out.println(i);
		}
	}
}

Python :

i = 1
while i <= 100:
    print(i)
    i += 1   # i = i + 1