Lab 6 part A

//Specification of the program.




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

double purchases( float Tabs[]){ return
  printf("When prompted, enter an ID# and price for one purhase:\n ");
  }
double bills(float Tabs){
  return printf("Mothly snack bar bill for ID# %f: \n",Tabs);
  }


int main(void) {
double price;
double ID;
int counter=0;

float Tabs[7]={0,1,2,3,4,5,6};
purchases(Tabs);

for(;;){
scanf("%lg",&ID);
if(ID>=0&&ID<=6){
scanf("%lg",&price );
counter++;
if(price<0.0){printf("Data set is ignored; The price must be > 0.0\n");counter-=1;break;}
}
else{break;}}//the else statement will
printf("%i purchases were entered\n",counter);


for(int i=0;i<=6;i++){
bills(Tabs[i]);
}

  return 0;
}