data types different in C

Question

how to do we declare parallel arrays in C. And also , how to add more than one data type in a single array. for example, i want to declare int and char data type in the same array

#include <stdio.h>

int main()
    

     
     
     double linetotal= qty*price;
     printf("line total =%lf\n",linetotal);
     double subtotal = line total - discount ;

    
      
    }
     }
    
    
    
    
    
    

Answer 1

Check the solution now.

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define NUM_CODE 10
const char *CODE[NUM_CODE] = {"B100","B122","B134","B138","B145","B160","B165","B178","B186","B194"};
double PRICE[NUM_CODE]={12.8,18.7,20.5,11.5,25.5,20.55,25.65,14.85,22.2,24.25};
int main()
{
    char name[20];
    
    printf("Enter buyer name: ");
    scanf("%s",name);

    int entry;

    printf("Enter number of entries for the invoice: ");
    scanf("%d",&entry);
    
    char code[10];
    int quantity;
    double price,linetotal=0;
    int i; 
    for(i=1;i<=entry;i++)
    {
        printf("Enter  Code: ");
        scanf("%s",code);
        printf("Enter Quantity: ");
        scanf("%d",&quantity);
        printf("Enter Unit Price: ");
        scanf("%lf",&price);
    
        int j;
        int flag=0;
        for(j=1;j<=NUM_CODE;j++){
            // how do i print values like B100 without getting errors//
            printf("%s ",CODE[j-1]);

            //  how to match the user input with parallel arrays?//
            if(strcmp(CODE[j-1],code)==0 && PRICE[j-1]==price){
                //If correct code and price found do
                printf("\nValid Code and price found\n");
                //set the flag and break from the loop
                flag=1;
                break;
            }
        }
        if(flag==0){
            //Exit the program with invalid entry
            printf("\nInvalid Code and price found\n");
            printf("The program will close now...\n");
            exit(1);
        }
        
        //  how do calculate line total,and subtotal after discount//
        // discount is 10% if line total is greater than Rs5000//
        linetotal = price * quantity + linetotal;
        printf("\n");
    }
    double subtotal;
    if(linetotal>5000){
        subtotal = 0.9*linetotal;
    }
    else if(linetotal>=1000 && linetotal<=5000){
        subtotal = 0.95*linetotal;
    }
    else{
        subtotal = linetotal;
    }

    printf("Discount: %0.2lf%%\nTotal Price: %lf\n",((linetotal-subtotal)/linetotal)*100,subtotal);

    return 0;
}