Pointer within a vector of structures giving segmentation error-CodePudding

Structure

struct products{
    int id;
    char* name;
    int buy;
    int sell;
    int q;
};

Within my main I've delcared a vector of products and have a for loop to assign the pointer name a value as such

int main(){
    struct products arr[5];
    for(int i=0; i<5; i  ){
        scanf("%s", arr[i].name);
    }

    return 0;
}

Seems to work fine on the first iteration but when it moves onto the second one that's where it gives me a segmentation error. The only thing I could find on other resources for similar problems was that I could be incorrectly allocating them.

CodePudding user response：

scanf %s expects a pointer to space to which it can write a string.

arr[i].name was never initialized. It's junk. It's not a (valid) pointer. You need to initialize arr[i].name so that it points to space to which scanf can write a string.