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

int main()
{
    const float conv_euro_dollar = 1.22,
                conv_euro_pound = 0.81,
                conv_euro_yen = 108.32;
    float montant, montant_euro, conversion;
	int de, a;
	
	printf("euro <1>, us dollar <2>, livre sterling <3>, yen <4>\n");
    printf("Choisissez la devise : ");
    scanf("%d", &de);
    printf("A convertir en : ");
    scanf("%d", &a);
    printf("Donnez le montant : ");
    scanf("%f", &montant);
    
    if (de == 1)
       montant_euro = montant;
    else if (de == 2)
       montant_euro = montant / conv_euro_dollar;
    else if (de == 3)
       montant_euro = montant / conv_euro_pound;
    else
       montant_euro = montant / conv_euro_yen;
       
    if (a == 1)
       conversion = montant_euro;
    else if (a == 2)
       conversion = montant_euro * conv_euro_dollar;
    else if (a == 3)
       conversion = montant_euro * conv_euro_pound;
    else
       conversion = montant_euro * conv_euro_yen;  
       
    printf("Conversion: %.2f\n", conversion);
	
    //system("pause");            //decommente si le terminal se ferme
	return 0;
}