Covariance and Contravariance in C++ Standard Library

Covariance and Contravariance are concepts that come up often as you go deeper into generic programming. While designing a language that su...

CppCon'15 and Silicon Valley Code Camp Presentations

In last couple of months I did a couple of presentations about my recent projects in C++. Session videos, slides, and code for all the prese...

search a character in a string strchr c++ example

strchr is a string class function which helps to  find a character in a string. It takes two parameters first is string and second is chara...

strncat function c++ example source code

strncat function used to concatenate two strings upto specified number of characters . It takes 3 parameters first and second is string thir...

string function strcat c++ example

Strcat function comes from the string class with string.h header file . It takes two strings as parameters and return second string append t...

concatenate two strings in c++ without using strcat

Write a C++ program which take two strings as input from user and concatenate two strings without using the string class function strcat() ....

count vowels in a string c++

Write a C++ program which counts numbers of vowels in a given string and tell every index where a vowel is found. This c++ example covers fo...

File opening modes and file pointer c tutorial

This C programming tutorial explains following concepts Open a c file and what are the opening modes What is a File pointer Close a c file R...

Stream types and file makers bof eof and newline c programming tutorial

This C programming tutorial covers two topics What is stream and its types in c programming How to use file makers EOF, BOF and newline  Wha...

How strings are stored and retrieved in C language

String Handling in C programming with common functions String is a combination of characters and it is enclosed in double quotes Character a...

copy data from one text file to another c source code

Write a c/c++ program which reads one text file and writes its data to another file. Hint use functions gets()  and fputc(). Concept used in...

Append data into text file c programming source code

Write a C/C++ program to append a file in which user will enter the file name to open it then enters data to append it. Program should termi...

write data into a text file c++ program

Write a C++ program in which user will continuously enter data into a text file and program should terminate when user press ESC key. Keep t...

Fun with Lambdas: C++14 Style (part 4)

This is part 4 in the series of Fun with Lambdas: C++14 Style . The previous posts are part 3 , part 2 , and part 1 . C++14 has a number of...