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Track and Display Stock Prices Using an API in C Programming
3 min readFeb 5, 2025
Introduction
In this guide, we will learn how to track and display stock prices using an API in C programming. By leveraging stock market APIs, you can retrieve real-time stock data, such as the current price of a stock, its opening price, and more. We will focus on using a stock price API that allows fetching data in real time.
Objective
The goal of this program is to:
- Retrieve real-time stock price data from an API.
- Parse and display the relevant stock information on the screen.
- Use a simple and effective C program to fetch and show stock prices.
Code
#include #include #include #include <curl/curl.h> #define API_KEY "your_api_key" // Replace with your API key #define STOCK_SYMBOL "AAPL" // Replace with the desired stock symbol // Function to write the response data into a string size_t WriteCallback(void *contents, size_t size, size_t nmemb, void *userp) { size_t total_size = size * nmemb; strncat(userp, contents, total_size); return total_size; } void get_stock_price(const char *symbol) { CURL *curl; CURLcode res; char url[256]; char response[1024] = ""; // Buffer to store the response // Construct the URL with the stock symbol and API key…