Question

In a C language program CODE BLOCKS !!!!!!!!

Program that stores the number of computers sold by three vendors in four different zones. Is required:
 Request the sale amount of each seller by zone, the values must be entered through the keyboard and validate that it does not accept negative numbers.
 Menu that requests the operation to be carried out. In case of entering an invalid data, send an error message and request the operation again.
 Option to perform another calculation

Note: The code must perform the calculations going through the array, operations assigning the values directly to the array elements are not accepted.

Answer 1

Code in C

#include <stdio.h> 
#include <stdlib.h>
void print_menu(){
        printf("Enter 1 to get total sales for each vendor.\n");
        printf("Enter 2 to get total sales for each zones.\n");
        printf("Enter 3 to get total sales across all vendors and zones.\n");
        printf("Enter 0 to exit program.\n");
}
int main(){
        //2 vendors and 4 zones
        const int num_vendors=3, num_zones=4;
        int arr[num_vendors][num_zones];
        
        //get sale amount
        for(int i=0;i<num_vendors;i++){
                for(int j=0;j<num_zones;j++){
                        int x;
                        printf("Enter sale amount for vendor %d in zone %d: ", i+1, j+1);
                        scanf("%d", &x);
                        while(x<0){
                                printf("Sales amount cannot be negative!\nEnter sale amount: ");
                                scanf("%d", &x);
                        }
                        arr[i][j]=x;
                }
        }
        int op;
        do{
                print_menu();
                scanf("%d", &op);
                while(op<0||op>3){
                        printf("Invalid option\nPlease input a valid option: ");
                        scanf("%d", &op);
                }
                switch(op){
                        case 1: {
                                for(int i=0;i<num_vendors;i++){
                                        int total=0;
                                        for(int j=0;j<num_zones;j++){
                                                total+=arr[i][j];
                                        }
                                        printf("Total sales for vendor %d = %d\n", i+1, total);
                                }
                                break;
                        }
                        case 2: {
                                for(int i=0;i<num_zones;i++){
                                        int total=0;
                                        for(int j=0;j<num_vendors;j++){
                                                total+=arr[j][i];
                                        }
                                        printf("Total sales for zone %d = %d\n", i+1, total);
                                }
                                break;
                        }
                        case 3: {
                                int total=0;
                                for(int i=0;i<num_vendors;i++){
                                        for(int j=0;j<num_zones;j++){
                                                total+=arr[i][j];
                                        }
                                }
                                printf("Total sales = %d\n", total);
                                break;
                        }
                }
        }while(op!=0);
}

Sample Console Input/Output

Enter sale amount for vendor 1 in zone 1: -2
Sales amount cannot be negative!
Enter sale amount: 1
Enter sale amount for vendor 1 in zone 2: 2
Enter sale amount for vendor 1 in zone 3: 
3
Enter sale amount for vendor 1 in zone 4: 4
Enter sale amount for vendor 2 in zone 1: 5
Enter sale amount for vendor 2 in zone 2: 3
Enter sale amount for vendor 2 in zone 3: 2
Enter sale amount for vendor 2 in zone 4: 4
Enter sale amount for vendor 3 in zone 1: 2
Enter sale amount for vendor 3 in zone 2: 3
Enter sale amount for vendor 3 in zone 3: 4
Enter sale amount for vendor 3 in zone 4: 1
Enter 1 to get total sales for each vendor.
Enter 2 to get total sales for each zones.
Enter 3 to get total sales across all vendors and zones.
Enter 0 to exit program.
1
Total sales for vendor 1 = 10
Total sales for vendor 2 = 14
Total sales for vendor 3 = 10
Enter 1 to get total sales for each vendor.
Enter 2 to get total sales for each zones.
Enter 3 to get total sales across all vendors and zones.
Enter 0 to exit program.
2
Total sales for zone 1 = 8
Total sales for zone 2 = 8
Total sales for zone 3 = 9
Total sales for zone 4 = 9
Enter 1 to get total sales for each vendor.
Enter 2 to get total sales for each zones.
Enter 3 to get total sales across all vendors and zones.
Enter 0 to exit program.
3
Total sales = 34
Enter 1 to get total sales for each vendor.
Enter 2 to get total sales for each zones.
Enter 3 to get total sales across all vendors and zones.
Enter 0 to exit program.
0

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