C :

#include<stdio.h>

void main () {
	int a,b,c,x;
	scanf("%d%d%d",&a,&b,&c);
	
	x=0;
	
	if(a>=90&&a<=100){
		x=x+1;
	}
	if(b>=90&&b<=100){
		x=x+1;
	}
	if(c>=90&&c<=100){
		x=x+1;
	}
	printf("%d",x);
}

C++ :

#include <bits/stdc++.h>
using namespace std;
int main(){
    int x,y,z,c = 0;
    cin>>x>>y>>z;
    if(x >= 90){
    	c++;
	}
	
	if(y >= 90){
		c++;
	}
	
	if(z >= 90){
		c++;
	} 
	
	cout<<c;
}

Java :

import java.util.Scanner;
public class Main
{
	public static void main(String[] Args)
	{
		Scanner sc = new Scanner(System.in);
		int a = sc.nextInt();
		int b = sc.nextInt();
		int c = sc.nextInt();
		int i = 0;

		if(a>=90) ++i;
		if(b>=90) ++i;
		if(c>=90) ++i;
		 System.out.println(i);

	}
}

Python :

n = input().split()
yw = int(n[0])
sx = int(n[1])
yy = int(n[2])
m = 0
if 90 <= yw <= 100:
    m += 1
if 90 <= sx <= 100:
    m += 1
if 90 <= yy <= 100:
    m += 1
print(m)