Why doesnt my triangle change colors(opengl)

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C++

OpenGL

So I am learning opengl and am doing a tutorial but everytime I run my code my triangle comes out as white instead of the rgba value I set in the fragment shader. if there is anything else wrong with the code it would be helpful if you could point it out.

<pre lang="C++">#include<iostream>
#include<glad/glad.h>
#include<GLFW/glfw3.h>

const char* vertexShaderSource = "#version 330 core\n"
"layout (location = 0) in vec3 aPos;\n"
"out vec4 vertexColor;\n"
"void main()\n"
"{\n"
"   gl_Position = vec4(aPos.x, aPos.y, aPos.z, 1.0);\n"
"	vertexColor = vec4(0.5, 0.0, 0.0, 1.0);\n"
"}\0";
const char* fragmentShaderSource = "version 330 core\n"
"out vec4 FragColor;\n"
"void main()\n"
"{\n"
"	FragColor = vertexColor\n"
"}\0";
void processInput(GLFWwindow* window);

int main()
{
	// Initialize GLFW
	glfwInit();

	glfwWindowHint(GLFW_CONTEXT_VERSION_MAJOR, 3);
	glfwWindowHint(GLFW_CONTEXT_VERSION_MINOR, 3);
	glfwWindowHint(GLFW_OPENGL_PROFILE, GLFW_OPENGL_CORE_PROFILE);

	float vertex[] = {
		-0.5f, -0.5f, 0.0f,  // left 
		0.5f, -0.5f, 0.0f,  // right
		0.0f, 0.5f, 0.0f,  // top 
	};

	GLFWwindow* window = glfwCreateWindow(800, 800, "YoutubeOpenGl", NULL, NULL);
	if (window == NULL)
	{
		std::cout << "Failed to create GLFW window" << std::endl;
		glfwTerminate();
		return -1;
	}
	glfwMakeContextCurrent(window);
	


	gladLoadGL();

	glViewport(0, 0, 800, 800);

	unsigned int vertexShader;
	vertexShader = glCreateShader(GL_VERTEX_SHADER);
	glShaderSource(vertexShader, 1, &vertexShaderSource, NULL);
	glCompileShader(vertexShader);
	unsigned int fragmentShader;
	fragmentShader = glCreateShader(GL_FRAGMENT_SHADER);
	glShaderSource(fragmentShader, 1, &fragmentShaderSource, NULL);
	glCompileShader(fragmentShader);


	unsigned int shaderProgram;
	shaderProgram = glCreateProgram();

	glAttachShader(shaderProgram, vertexShader);
	glAttachShader(shaderProgram, fragmentShader);
	glLinkProgram(shaderProgram);

	glDeleteShader(vertexShader);
	glDeleteShader(fragmentShader);

	unsigned int VAO;
	glGenVertexArrays(1, &VAO);
	unsigned int VBO;
	glGenBuffers(1, &VBO);


	glBindVertexArray(VAO);
	glBindBuffer(GL_ARRAY_BUFFER, VBO);
	glBufferData(GL_ARRAY_BUFFER, sizeof(vertex), vertex, GL_STATIC_DRAW);


	glVertexAttribPointer(0, 3, GL_FLOAT, GL_FALSE, 3 * sizeof(float), (void*)0);
	glEnableVertexAttribArray(0);



	while (!glfwWindowShouldClose(window))
	{
		processInput(window);

		glClearColor(0.2f, 0.3f, 0.3f, 1.0f);
		glClear(GL_COLOR_BUFFER_BIT);

		glUseProgram(shaderProgram);
		glBindVertexArray(VAO);
		glDrawArrays(GL_TRIANGLES, 0, 3);

		glfwSwapBuffers(window);
		glfwPollEvents();
	}
	glDeleteVertexArrays(1, &VAO);
	glDeleteBuffers(1, &VBO);
	glDeleteProgram(shaderProgram);


	glfwDestroyWindow(window);
	glfwTerminate();
	return 0;
}
void processInput(GLFWwindow* window)
{
	if (glfwGetKey(window, GLFW_KEY_ESCAPE) == GLFW_PRESS)
		glfwSetWindowShouldClose(window, true);
}

What I have tried:

I have tried looking up numerous ways to change the color of a triangle but nothing has been working.