CODEWITHSUNDEEP
cstring
Davide
Davide

Reputation: 175

How to divide string in two parts?

I need to write a program where the user inputs 3 items and their relative prices, on three separates strings. Then I have to check whether the last item and price are the same as one of the other two. If that is the case I have to print the item and the total price (the price of that item multiplied by 2).

The problem is that apparently when I call a function to divide the name of the item from the price (I would ideally save them as two separate strings, and then convert the float string of the price to a normal float variable), but it doesn't work.

This is the function

void f(char v[], char product[], char price[]){

int i=0, a=0, inword=0, z=0;

while (!z) {
    if(isalpha(v[i])&&inword)
        product[i]=v[i];
    if (isalpha(v[i])&&!inword) {
        inword++;
        product[i]=v[i];
    }
    if (isspace(v[i])&&inword) {
        inword=0;
        a=1;
    }
    if ((isdigit(v[i])||v[i]=='.')&&a) {
        price[i]=v[i];
    }
    if (a&&v[i]=='\n')
        z=1;
    i++;
}
puts(product);
puts(price);

}

I made sure it is properly defined in the main and before the main. The input string should be something like this: Apple 4.99\n Therefore I first search for a letter, if I find one I start to save the word in the string product, then as soon as I find a space I exit from "inword" and I search for a digit (the price doesn't have € £ or $).

Ideally the outcome of the two strings would be:

product = Apple price = 4.99

But if I try to print the price it's empty... Can you help me?

The side question is how do I search for £ $ € in the string? If I write '€' it gives me an error sign... Thank you for your help

Upvotes: 1

Views: 97

Answers (1)

klutt
klutt

Reputation: 31409

You could do like this

void f(char v[], char product[], char price[]){
    char * p = v;
    while (!isdigit(p[0]))
        p++;

    memcpy(product, v, p-v);
    product[p-v]='\0';
    strcpy(price, p);
}

Upvotes: 1

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