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