#include <stdio.h>
int main() {
int n;
float total=0;
printf("combien de photocopies voulez-vous ?\n");
scanf("%d\n",&n);
if (n>10) {
total+=1;
if (n>30) {
total+=1.8;
total+=(n-30)*0.08;
}
else
total+=(n-10)*0.09;
}
else
total+=n*0.1;
printf("La facture est de %f\n",total);
}
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