Structure de controle

#include <stdlib.h>
#include <stdio.h>

int main(){
  unsigned int choix=0;
  while(choix!=1 && choix!=2){
    printf("Multiplication ou addition ?\n");
    printf("1) Addition\n");
    printf("2) Multiplication\n");
    scanf("%d",&choix);
  }
  if (choix==1){
     //.....
  }else if(choix==2){
     //.....
  }
  return 0;
}

import java.io.*;
class InOut {
public static void main(String args[]) throws IOException {
  int choix=0;
  while(choix!=1 && choix!=2){
    System.out.println("Multiplication ou addition ?");
    System.out.println("1) Addition");
    System.out.println("2) Multiplication");
    choix=Keybord.readInt();
  }
  if (choix==1){
     //.....
  }else if(choix==2){
     //.....
  }
  return 0;
}
}