How to correctly input a string in C

Question

I am currently learning C, and so I wanted to make a program that asks the user to input a string and to output the number of characters that were entered, the code compiles fin

Answer 1

That's because char i[] = ""; is actually an one element array.

Strings in C are stored as the text which ends with \0 (char of value 0). You should use bigger buffer as others said, for example:

char i[100];
scanf("%s", i);

Then, when calculating length of this string you need to search for the \0 char.

int length = 0;
while (i[length] != '\0')
{
    length++;
}

After running this code length contains length of the specified input.