Linux编程实践----进程间的通信IPC--管道

#include<unistd.h>
#include<stdlib.h>
#include<stdio.h>
#include<string.h>
#include<iostream>
using namespace std;
int main()
{
FILE *readfp;
char buffer[100];
int charsread;
memset(buffer,'\0',sizeof(buffer));
readfp=popen("uname -a","r");
if(NULL!=readfp)
{
charsread=fread(buffer,sizeof(char),99,readfp);
if(0<charsread)
{
char *p=buffer;
while(*p)
{cout<<*p;p++;}
cout<<endl;
}
pclose(readfp);
exit(EXIT_SUCCESS);
}
exit(EXIT_FAILURE);
}
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