C++ openGL GLFW xcode parse expecting bracket that is already there - c++

Question

Below is my code. The error only occurs after I try to run the code, when I click the info button it says it's to match the bracket connected to my float function even though I already have a closing bracket. I am new to OpenGL/GLFW and am new to Xcode any help is greatly appreciated.
Photo of code in Xcode
#include <GLFW/glfw3.h>
#define SCREEN_WIDTH 640
#define SCREEN_HEIGHT 480
int main(void)
{
GLFWwindow* window;
/* Initialize the library */
if (!glfwInit())
return -1;
/* Create a windowed mode window and its OpenGL context */
window = glfwCreateWindow(SCREEN_HEIGHT, SCREEN_WIDTH, "Hello World", NULL, NULL);
if (!window)
{
glfwTerminate();
return -1;
};
glViewport(0.0f, 0.0f, SCREEN_WIDTH, SCREEN_HEIGHT);
glMatrixMode( GL_PROJECTION );
glLoadIdentity( );
glOrtho(0, SCREEN_WIDTH, 0, SCREEN_HEIGHT, 0, 1);
glMatrixMode( GL_MODELVIEW);
glLoadIdentity();
/* Make the window's context current */
glfwMakeContextCurrent(window);
float vertices[]{
0,300, 0.0
300,300.0.0 **Error located here "Expected '}'"**
300,0,0.0
0,0,0.0
};
/* Loop until the user closes the window */
while (!glfwWindowShouldClose(window))
{
glClear(GL_COLOR_BUFFER_BIT);
/* Render here */
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, vertices);
glDrawArrays(GL_QUADS, 0, 4);
glDisableClientState(GL_VERTEX_ARRAY);
/* Swap front and back buffers */
glfwSwapBuffers(window);
/* Poll for and process events */
glfwPollEvents();
}
glfwTerminate();
return 0;
}