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The C Standard Library is a reference for C programmers to help them in their projects related to system programming. All the C functions have been explained in a user-friendly way and they can be copied and pasted in your C projects.
The C++ Standard Library is a reference for C++ programmer to help them at every steps of their projects related to system programming. All the C++ functions have been explained in easy to understand way and they can be used easily in your C++ projects.
C Standard Library - Quick Guide - The assert.h header file of the C Standard Library provides a macro called assert which can be used to verify assumptions made by the program and print a diagnostic message if this assumption is false.
Sr.No. Variable & Description; 1: size_t. This is the unsigned integral type and is the result of the sizeof keyword.. 2: wchar_t. This is an integer type of the size of a wide character constant.. 3
The C++ Standard Library can be categorized into two parts − The Standard Function Library − This library consists of general-purpose,stand-alone functions that are not part of any class. The function library is inherited from C.
C library function - strlen() - The C library strlen() function is used to calculates the length of the string. This function doesn't count the null character ''.
The C stdlib library abs() function is used to returns the absolute value of the specified number, where absolute represents the positive number. This function only returns the positive integer. For example, if we have an integer value of -2, we want to get the absolute number of -2.
C Library - strcmp() function - The C Library strcmp() function is used to compare two strings. It checks each character in the string one by one until it finds a difference or reaches the end of the one string.
The C library time() function returns the time since the Epoch (00:00:00 UTC, January 1, 1970), measured in seconds. If seconds is not NULL, the return value is also stored in variable seconds. In context of time() function, Epoch determine the timestamp value which is date and time.
The C library function memcpy() uses three parameters− destination string(dest), source string(src), and strlen() function where it calculates the length of the source string and the number of bytes to be copied.