#include 
    
     #include 
     
      #include 
      
       #define MAX_SIZE 1024int main(){    FILE *fstream = NULL;    int error=0;    char buff[MAX_SIZE]={0};    if(NULL == (fstream=popen("ls -r","w")))//这个应该是写方式的管道    {        fprintf(stderr,"execute command failed:%s",strerror(error));        return -1;    }    if(NULL != fgets(buff,sizeof(buff),fstream))    {        printf("%s",buff);    }     else     {         pclose(fstream);         return -1;     }     pclose(fstream);    printf("Hello world!\n");    return 0;}
      
     
    

上面的函数功能，就是ls -r这个命令的结果输出到调试窗口

下面是输入的版本：主要是调用popen函数，这个函数的缺点是要默认的开启一个sh

#include 
    
     #include 
     
      #include 
      
       #include 
       
        #define MAX_SIZE 1024void InputShell(char * shell){    FILE *read_fp = NULL;    char buffer[MAX_SIZE];    int chars_read = 0;    memset(buffer, 0, sizeof(buffer));    read_fp = popen(shell, "r");    if (read_fp != NULL)    {        chars_read = fread(buffer, sizeof(char), MAX_SIZE, read_fp);        while (chars_read > 0)//读取多数shell命令，shell命令比较长。        {            buffer[chars_read - 1] = 0;            printf("Reading:\n%s\n", buffer);            chars_read = fread(buffer, sizeof(char), MAX_SIZE, read_fp);        }        pclose(read_fp);        //return EXIT_SUCCESS;    }}int main(){    char shell[MAX_SIZE] = {0} ;//= NULL;    //while(1)    //{           scanf("%s",shell);    //gets(shell);        InputShell(shell);    //}    return EXIT_FAILURE;}