Converting Dollars into Rupees in C
Converting Dollars into Rupees in C
Introduction
We see that currency conversion is a vital process, particularly when working with overseas transactions. In this article, we will examine how to use the C programming language to convert dollars to rupees.
You can thoroughly comprehend the steps required to execute currency conversions by carefully following the offered step-by-step guide. In this article, we will see the skills to implement dollar-to-rupee conversions efficiently and correctly in C program.
What is Exchanging Rate?
The rate of converting one country's currency into another country's currency is called exchanging rate. The amount of one currency required to purchase one unit of another currency is how exchange rates are commonly expressed. For example, an exchange rate of 1 USD to 70 INR (Indian Rupees), indicates that one US dollar can be converted into 70 INR.
Fetching the Exchanging Rate
To automate the translation of dollars to rupees, we require the most recent exchange rate. APIs (Application Programming Interfaces) are widely used by suppliers to give real-time exchange rate information. We can obtain real-time exchange rate data using HTTP queries thanks to these APIs. XE.com, CurrencyLayer, and Open Exchange Rates are more choices. You need to register for an account and obtain an API key after selecting a provider.
It includes the following steps:
- Choose a reliable source: You may discover exchange rates from several trustworthy sites. These consist of banks, exchange bureaus, financial institutions, and trustworthy financial websites. Make sure the site you select offers accurate and current information.
- Select the currencies: Choose the particular currencies you want to exchange. Enter the country's currency indication and find the exchange rate.
- Use online resources: Visit a trustworthy financial website or institution's website for information on exchange rates. Real-time exchange rate information and currency converters are readily available online. The websites XE.com, OANDA, Bloomberg, and Reuters are a few well-known examples. On these websites, look for the section on exchange rates or the currency converter.
- Enter the currencies: Enter the currencies you want to convert once you have accessed the currency converter or exchange rate tool. Put USD and INR in the appropriate fields, for instance.
- Get the exchange rate: The tool should show the conversion rate between the specified currencies after the user specifies them. Additionally, it could display the purchasing and selling prices as well as any other details like charges or commissions.
- Verify the date and time: Make sure the currency rate data you gathered is current. Since exchange rates are subject to regular change, having the most recent information is crucial.
Implementing the Conversion in C
Let's move on to the C programming implementation of the conversion now that we have a fundamental grasp of the exchange rate and how to obtain it.
1. Include the necessary libraries
#include <stdio.h> #include <stdlib.h> #include <curl/curl.h>
2. Define the API endpoint and your API key:
#define API_ENDPOINT "https://api.example.com/exchange_rates" #define API_KEY "your_api_key_here"
3. Implement a callback function to handle the API response:
size_twrite_callback (void *contents, size_t size, size_t nmemb, char *buffer) { memcpy(buffer, contents, size * nmemb); return size * nmemb; }
4. Write a function to fetch the exchange rate using the API:
doublefetch_exchange_rate() { CURL *curl; CURLcode res; char buffer [1024]; double exchange_rate = 0.0; curl = curl_easy_init(); if (curl) { curl_easy_setopt(curl, CURLOPT_URL, API_ENDPOINT); curl_easy_setopt(curl, CURLOPT_WRITEFUNCTION, write_callback); curl_easy_setopt(curl, CURLOPT_WRITEDATA, buffer); res = curl_easy_perform(curl); if (res == CURLE_OK) { scanf(buffer, "%lf", &exchange_rate); } curl_easy_cleanup(curl); } return exchange_rate; }
5. Implement the main function to convert the dollar into the rupee:
int main() { float dollar, rupee_rate, rupee; // Input the dollar amount printf("Enter the amount in dollars: "); scanf("%f", &dollar); // Input the current conversion rate printf("Enter the current conversion rate: "); scanf("%f", &rupee_rate); // Convert dollars to rupees rupee = dollar * rupee_rate; // Display the result printf("%.2f dollars is equal to %.2f rupees. ", dollar, rupee); return 0; }
Output:
Enter the amount in dollars: 50 Enter the current conversion rate: 82 50.00 dollars is equal to 4100.00 rupees.
Conclusion
In conclusion, this article offered a thorough tutorial on using the C programming language to convert dollars to rupees. We talked about the fundamental ideas behind exchange rates and how crucial it is to use APIs to retrieve the most recent values. You can safely carry out dollar-to-rupee conversions in your C program by putting the article's step-by-step instructions into practice.
The procedure also defined the necessary libraries, the API key, and the endpoint, implemented a callback function to handle the API response, and created a function to fetch the exchange rate. Finally, we demonstrated how to convert dollars to rupees by multiplying the input amount by the calculated exchange rate in the main function.
You can manage foreign transactions and financial calculations with ease if you become proficient at currency conversions in programming. With this information, you may create reliable applications that enable fluid exchanges between several currencies, giving users access to precise and recent financial data.