Becasue you don't want to type the same staff again and again... For example, in my system stdio.h has 3952 lines... you cannot expect me to type those lines into my sources again and again...
#include<stdio.h>
# include <stdio.h> # include <conio.h> # include <stdlib.h> # include <string.h>
C programming can be started on Windows by using a suitable IDE (these include compilers) such as Dev-C++
strcat if u wnt to use strcat then include string.h header file
A programming language is a language in which a human can tell a machine to do something, three examples include: C, C++ and C#.
In programming, specifically in C and C++, the hashtag (#) is used to include files into the main program and to create macros.
No commands in C; the name of function sqrt is sqrt (include math.h; and use -lm at linkage)
There are no commands in C-programming, you should use function sqrt from math.h
Programming, mainly.
c++
In computer-programming.
For is it programming used.