C/C++随机生成32位字符串

C/C++随机生成32位字符串

#include <stdio.h>
#include <time.h>
#include <stdlib.h>

void srand_str()
{
    
    
 char m[64]={
    
    0},s[10]={
    
    0};
 srand(time(0));
 for(int i = 0; i<32; i++)
 {
    
    
   int x,type;
   type = rand()%3;
   if(type == 0)//判断随机类型生成大小写或者字母
   {
    
    
     x=rand()%('Z'-'A'+1)+'A'; 
    }else if(type == 1){
    
    
     x=rand()%('z'-'a'+1)+'a';
    }else if(type ==2){
    
    
     x=rand()%('9'-'0'+1)+'0';
   }
   sprintf(s,"%c",x);
   strcat(m,s);
 }
 printf("%s\n",m);
}