ex c

#include<stdio.h>
int main(){
float a,b;
int choix;
printf("taper deux nombres: a b ");
scanf("%f",&a);
scanf("%f",&b);
printf("Menu des operations\n 1.Addition\n 2.Soustraction\n 3.Multiplication\n 4.Division\n");
scanf("%d", &choix);
switch(choix){
    case 1 : printf("choix: Addition\n");
printf("%f+%f=%f\n",a,b,a+b);
break;
    case 2 : printf("choix: Soustraction\n");
printf("%f-%f=%f\n",a,b,a-b);
break;
    case 3 : printf("choix: Multiplication\n");
printf("%f×%f=%f\n",a,b,a*b);
break;
    case 4 : printf("choix: Division\n");
printf("%f/%f=%f\n",a,b,a/b);
break;
    default : printf("Pas un choix valide");
break;
}
}