not able to initialize structure variable inside main whose structure is defined gl

[sinha13134]

i am trying to run a programme implementing a function with structures in c... which is:

#include<stdio.h>
#include<conio.h>
struct store
    {
        char name[20];
        float price;    
        int quantity;
    };
 
struct store update (struct store product, float p, int q);
 
float mul(struct store stock_value);
 
 
    main()
{
    int inc_q;
    float inc_p,value;
 
    struct store item = {"xyz", 10.895 ,10}; 
 
/*this is where the problem lies, when i am initializing this store item, the values are not being stored by the members i.e. ater this line the members (1)item.name should be "xyz",(2)item.price should be 10.895, (3)item.quantity should be 10; but except the item.name=xyz other members take a garbage value of their own*/
 
    printf("name    = %s\n price = %d\n quantity =  %d\n\n",item.name,item.price,item.quantity);
 
    printf("enter increment in price(1st) and quantity(2nd) : ");
    scanf("%f %d",&inc_p,&inc_q);
 
    item = update(item,inc_p,inc_q);
 
    printf("updated values are\n\n");
    printf(" name       = %d\n price      = %d\n quantity    = %d",item.name,item.price,item.quantity);
 
    value = mul(item);
 
    printf("\n\n value = %d",value);
}
struct store update(struct store product, float p, int q)
{
    product.price+=p;
    product.quantity+=q;
    return(product);
}
float mul(struct store stock_value)
{
    return(stock_value.price*stock_value.quantity);
} 

some one please help to remove the error in my code.. reply soon

[weaknessforcats]

This code:

struct store item = {"xyz", 10.895 ,10}; 
 

10.895 is a double whereas the struct needs a float. Either change to double in the struct or code 10.905F. Otherwise you get a warning "conversion double to float possible loss of data".

Also, your update function takes a store argument which means the compiler generates a copy for the function to work with. It is this copy that is updated and deleted when the function completes. You need a store* here instead so you update the original variable and not the copy.

I changed that and everything compiled OK. I did not test anything.