Why we can't use arrow operator in gets and puts?

C++Server Side Programming Programming

#include
struct example
{
char name[20];
};
main()
{
struct example *ptr;
puts("enter name");
gets(ptr->name);/////why it does not accept this
puts(ptr->name);///it will results segmentation fault
}

With dot operator it's ok to use gets. e.g gets(s.name); but not with arrow operator please reply as soon as possible.

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1 Answer

Pythonista

Answered on 8th May, 2018

You can't read user input in an un-initialized pointer. Instead, have a variable of the struct data type and assign its address to pointer before accessing its inner elements by -> operator

#include <stdio.h>
struct example
{
char name[20];
};
main()
{
struct example *ptr;
struct example e;
puts("enter name");
gets(e.name);
ptr=&e;
puts(ptr->name);
}
Typical result of above code

enter name Disha
You entered Disha

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Why we can't use arrow operator in gets and puts?

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