#include<stdio.h>
#include<conio.h>
main()
{int a,b;
 char p;
  printf("entrer l'operande\n");
 scanf("%c",&p);
 printf("entrer les valeurs de a et b\n");
 scanf("%d %d",&a,&b);
 
 
 switch(p)
 { case'+':
   printf("%d",a+b);
   break;
 case'-':
  printf("%d",a-b);
  break;
 }
 getch();
}

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