Linux c连接 postgresql数据库

#include<stdio.h>

#include<stdlib.h>

#include<libpq-fe.h>

#include <string.h>

int main()

{

    PGconn *conn;

 const char *conninfo="host=localhost dbname=cloud user=cloud password=cloud";

  //  char conninfo[100];

  //  sprintf(conninfo,"dbname=%s user=%s password=%s","cloud","cloud","cloud");

    conn=PQconnectdb(conninfo);



    if(PQstatus(conn)==CONNECTION_BAD)

    {

       fprintf(stderr,"connection to %s failed",conninfo);

       PQerrorMessage(conn);

    }

    else printf("connection ok");

 

    PQfinish(conn);

    return 0;

}

编译问题：http://www.cnblogs.com/xfiver/archive/2012/02/17/2355642.html

gcc编译：gcc -I /usr/include/postgresql/ postgresql.c -o pgsql -lpq

 

 

yum install postgresql-devel

如果没有include 和 lib 两个目录...... 说明你还没装开发devel包 redhat上应该有其开发包