1.Write a program to show list of grocery shop items and also total bill of selected item by user.
#include<stdio.h>
void main()
{
    int a,b,c=0,end=1,sum=0;
    while(end)
    {
        printf("Grocery shop\n1.Apple\n2.Banana\n3.Cold Drink\n4.Biscuit\n5.Genrate total Bill\n ");
        printf("Please Enter the item number of grocery to add in bucket or To Generate bill press 5=");
        scanf("%d",&a);
        switch(a)
        {
        case 1:
            printf("Enter the amount of apple in kg=");
            scanf("%d",&b);
            c=b*120;
            sum+=c;
            printf("The cost of %d kg apple is %d\n",b,c);
        break;
        case 2:
            printf("Enter the number of dozen banana's=");
            scanf("%d",&b);
            c=b*50;
            sum+=c;
            printf("The cost of %d dozen Banana's is %d\n",b,c);
        break;
        case 3:
            printf("Enter the number of Cold Drink bottles=");
            scanf("%d",&b);
            c=b*30;
            sum+=c;
            printf("The cost of %d cold drink bottle is %d\n",b,c);
        break;
        case 4:
            printf("Enter the number of biscuit packets=");
            scanf("%d",&b);
            c=b*10;
            sum+=c;
            printf("The cost of %d Biscuit packets is %d\n",b,c);
        break;
        case 5:
            end=0;
        break;
        default:
        printf("The Grocerry item number is invalid\n");
        }
    printf("The Total Bill is %d\n\n\n",sum);
    }
}

Output: