The localtime function in C converts the calendar time pointed to by the timer into a broken-down time, expressed as local time. The localtime function is present in the <time.h> header file. Syntax of localtime: The prototype of the localtime () function is below: #include <time.h> struct tm *localtime(const time_t *timer); Parameters: The […]
localtime function in C? Read More »
The gmtime function in C converts the calendar time pointed to by the timer into a broken-down time, expressed as UTC. That means it uses the value of the time_t object to fill a tm structure with the values that represent the corresponding time, expressed in Coordinated Universal Time (UTC) or GMT timezone. Syntax of
gmtime Function in C Read More »
The difftime() is a C Library function. It computes the difference between two calendar times (time1 – time0 ) in seconds. The difftime function is present in the <time.h> header file. Syntax of difftime: The prototype of the difftime function is below: double difftime(time_t time1, time_t time0); Parameters: The difftime function takes two
difftime Function in C Read More »
In this article, you will learn how to write a C program to display a month-by-month calendar for a given year. I have already written a code to display a calendar for the given month and year. This code compiles in Code Blocks with the GCC compiler. The following is a C program to
C program to display month by month calendar for a given year Read More »
In this article, you will learn to write a program to calculate age. That means, if the given two dates are dt1 and dt2, you need to calculate the difference between the two dates in years, months, and days. But make sure that the dt1 is earlier than the dt2. For example, Input : Birth date =
Program to calculate age Read More »
In this article, you will learn how to find the number of days between two dates. That means, if the given two dates are dt1 and dt2, you need to find the total number of days between them. For example, Input: dt1 = {10, 2, 2022} dt2 = {8, 1, 2023} Output: Difference between two
Find number of days between two given dates Read More »
In this article, you learn to find the count of leap years in a given year range. That means if S and E are two given years your task is to find the total number of leap years possible in the range (S, E). I assume you already know what leap year is and how
Count of Leap Years in a given year range Read More »
The mini-project “Calendar in C” is a console application using the C programming language. This project compiles in Code Blocks with the GCC compiler. In this console application, you can check the date for the given month and year. In this project, we are using Zeller’s Congruence. Zeller’s congruence is an algorithm devised by Christian
Calendar in C: C Mini Project Read More »
This blog post will teach you how to Implement your own itoa() function in C. The itoa() function is a non-standard function that converts an integer into a null-terminated string. I have already written a blog post on how to convert an integer to a string if you want you can check, an efficient way
Implement your own itoa() Read More »
This blog post will teach you how to convert an int to a string in C. The itoa() function (non-standard function) converts an integer value to a null-terminated string using the specified base (behavior depends on implementation). As itoa() is not a standard function, in my recommendation, it is best to use sprintf() or snprintf()(snprintf
How to convert an int to string in C? Read More »