Question

I want to take a string from stdin but I don’t want a static array of fixed size

I know that scanf need something where save the stdin input, but I can’t do something like this:

char string[10]
scanf("%s",string);

becouse I need to know before how long will be the string in order to allocate the right memory space.

Can you help me to resolve this problem?

---

woooooooo

i’m still locked with this problem…
I’m going mad

can you please give me the working code?

Answer 1

The only way to be sure is to do a loop; read one character at a time and store. If your allocated buffer becomes full, grow it by some suitable amount (more than one byte at a time is recommended for performance, a classic rule-of-thumb is to double it).

Stop when you consider the string to end, perhaps at line feed or EOF.