如下的内容段是关于C语言生成随机uuid编码的内容。

#include <stdio.h>#include <stdlib.h>{ int n; for( n = 0; n < 16; ++n ) { int b = rand()%255; switch( n ) { case 6: sprintf( p, "4%x", b%15 ); break; case 8: sprintf( p, "%c%x", c[rand()%strlen( c )], b%15 ); break; default: sprintf( p, "%02x", b ); break; } p += 2; switch( n ) { case 3: case 5: case 7: case 9: break; } } return buf;}