millfork/docs/stdlib/other.md

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stdio

The stdio module automatically imports the string module.
It requires an implementation of void putchar(byte a) and therefore works only on targets with console output.

void putstr(pointer str, byte len)

Prints a string of length len located at address str.

void putstrz(pointer str)

Prints a null-terminated string located at address str.
If the string is longer than 255 bytes, then the behaviour is undefined (might even crash).

string

byte strzlen(pointer str)

Calculates the length of a null-terminated string.
If the string is longer than 255 bytes, then the behaviour is undefined (might even crash).