红包的来源传说是什么？

#include int strcmp_new(const char* src, const char* dst) {int ret = 0; while( !(ret = *(unsigned char*)src - *(unsigned char*)dst) && *dst){src ++;dst ++;} if( ret 0) ret = -1; else if(ret > 0) ret = 1; return ret;} int main(){ char s1[10] = "1234"; char s2[10] = "1234"; int ret1 = strcmp_new(s1,s2); printf("ret=%d\n