5-8

#include<stdio.h>

float cash;

int main(void)

{

         int choice;

         float value;

         void income(float number),expend(float number);

 

         cash=0;

         printf("Enter operate choice(0--end,1--income,2--expend):");

         scanf("%d",&choice);

         while(choice!=0){

                   if(choice==1){

                            printf("Enter cash value:");

                            scanf("%f",&value);

                            if(choice==1)

                                     income(value);

                            else

                                     expend(value);

                            printf("current cash:%.2f\n",cash);

                   }

                   printf("Enter operate choice(0--end,1--income,2--expend):");

                   scanf("%d",&choice);

         }

 

         return 0;

}

void income(float number)

{

         cash=cash+number;

}

void expend(float number)

{

         cash=cash-number;

}