Share C code with CodeThis

What you get

• C-aware syntax highlighting via CodeMirror
• Instant shareable link — no signup required
• Optional expiration (7 days, 30 days, permanent)
• Password protection for private pastes
• Works with the REST API and MCP server
• Rich markdown and MDC components alongside code

Common use cases for C pastes

• Embedded and firmware snippets
• OS primitives and syscalls
• Bit-twiddling utilities
• Algorithm textbooks

Example

#include <stdio.h>

int count_bits(unsigned int n) {
    int count = 0;
    while (n) { n &= (n - 1); count++; }
    return count;
}