Compile troubles c to c++ trans

I am unsure what exactly is wrong with this... It won't compile for me, I translated it from c to C++ (or attempted to)... and yes I'm a beginner. Thanks!

#include <stdlib.h>
#include <stdio.h>
using namespace std;

int main( int argc, char * argv[], char* env[]) {
    int开发者_如何转开发 i = 0;

    cout << "Content-type: text/plain\n\n";

    /* print query string only */
    cout << "%s\n",getenv("QUERY_STRING");

    /* print the while environment */
    while (env[i]) cout << "%s\n",env[i++];
    return 0;
}

Change these:

cout << "%s\n",getenv("QUERY_STRING");

Into this:

cout << getenv("QUERY_STRING") << endl;

Same goes for the other one too, (EDIT:) like this:

while (env[i]) cout << env[i++] << endl;

If you are using cout, you should #include <iostream>. Then it will compile.

This is correct.

#include <stdlib.h>
#include <stdio.h>
#include <iostream>
using namespace std;

int main( int argc, char * argv[], char* env[]) {
    int i = 0;

    cout << "Content-type: text/plain\n\n";

    /* print query string only */
    cout << getenv("QUERY_STRING") << endl;

    /* print the while environment */
    while (env[i]) cout << env[i++] << endl;
    return 0;
}

Output with std::cout does not use %s or %d like printf, you have to put the variable or value after <<.