error: GLSL 3.30 is not supported

[MicPiano]

I'm trying to learn qt-opengl by myself and has ran into a problem. I am following this tutorial with some modifications and everything compiles perfectly. However when I run I get the following message:

QOpenGLShader::compile(Vertex): 0:1(10): error: GLSL 3.30 is not supported. Supported versions are: 1.10, 1.20, 1.30, 1.00 ES, and 3.00 ES

*** Problematic Vertex shader source code ***
#version 330 core
#define lowp
#define mediump
#define highp
#line 2
layout(location = 0) in vec3 position;
layout(location = 1) in vec3 color;
out vec4 vColor;

void mian()
{
    gl_Position = vec4(position, 1.0);
    vColor = vec4(color, 1.0f);
}

***
QOpenGLShader::compile(Fragment): 0:1(10): error: GLSL 3.30 is not supported. Supported versions are: 1.10, 1.20, 1.30, 1.00 ES, and 3.00 ES

*** Problematic Fragment shader source code ***
#version 330 core
#define lowp
#define mediump
#define highp
#line 2
in vec4 vColor;
out vec4 fColor;

void main()
{
    fColor = vColor;
}

I am using Qt 5.7 on Ubuntu16.04
my 'glxinfo | grep 'version' has the following output

server glx version string: 1.4
client glx version string: 1.4
GLX version: 1.4
    Max core profile version: 3.3
    Max compat profile version: 3.0
    Max GLES1 profile version: 1.1
    Max GLES[23] profile version: 3.0
OpenGL core profile version string: 3.3 (Core Profile) Mesa 11.2.0
OpenGL core profile shading language version string: 3.30
OpenGL version string: 3.0 Mesa 11.2.0
OpenGL shading language version string: 1.30
OpenGL ES profile version string: OpenGL ES 3.0 Mesa 11.2.0
OpenGL ES profile shading language version string: OpenGL ES GLSL ES 3.00

I don't understand why it GLSL3.30 is not supported

[A Former User]

@MicPiano Hi, welcome to the Qt forum! Try removing the "core" from the version declaration: #version 330.

[MicPiano]

@Wieland Initially I didn't have that. I was thinking maybe it's a good idea to use the core profile? Long story short, It still doesn't work. By the way, The difference of my code and the tutorial is that I uses QOpenGLWidget instead of QWindow for implementation.

[A Former User]

Okay. Then try to explicitly set the default surface format, in main.cpp:

int main(int argc, char *argv[])
{
    QApplication a(argc, argv);
    QSurfaceFormat fmt;
    fmt.setVersion( 3, 3 );
    fmt.setProfile( QSurfaceFormat::CoreProfile );
    QSurfaceFormat::setDefaultFormat( fmt );
//...

(#version 330 should default to #version 330 core anyways)

[MicPiano]

@Wieland Thank you for the elegant solution!! Moreover than that, I found that in my vertex file I miss typed main as mian