编辑代码

#include <stdio.h>
int main()
{
float f,c,n;
scanf ("%f+%f\n",&f,&n);
if (f<0||f>100)
   {f=0;
printf ("第一个数输入错误，请重新输入:\n");return 0;
   }
if (n<0||n>100) 
  {n=0,
printf("第二个数输入错误，请重新输入:\n");return 0;
  }
c=f+n;
printf ("   %.0f\n",f);
printf (" +  %.0f  \n",n);
printf ("--------\n");
printf (" = %.0f",c);
return 0;
}