C strlen()

CBeginner

Measure bytes in a null-terminated string.

When to use it

Use only when the string is guaranteed to be terminated.

C · Editable example

#include <stdio.h>
#include <string.h>
int main(void) { printf("%zun", strlen("Code")); return 0; }

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Expected output

Common mistake and fix

strlen counts bytes, not Unicode characters.

Related concepts: strings, buffers

Explain this code

Measure bytes in a null-terminated string.

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When to use it

Expected output

Common mistake and fix

Explain this code

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