OpenCV Raspberry Pi printf() not displaying

Question

I am trying to make image processing using OpenCV on a Raspberry pi. I've installed the relevant packages and OpenCV but for some reason I cannot manage to compile not even a printf();

#include <iostream>
#include <stdio.h>

using namespace std;

int main(){
printf("hello world");
return 0;
}

After I run this using g++ filename.cpp , the output on the console is empty, it does not print anything but asks for the next command. Is there anything I am missing?

Answer 1

In order to successfully compile your OpenCV project you'll have to link against OpenCV libraries.

When compiling on the command-line I'm always using pkg-config to link against needed libraries.

With pkg-config installed, try:

g++ `pkg-config --libs --cflags opencv` -std=c++11 yourfile.cpp