Sometimes it is the people no one can imagine anything of who do the things no one can imagine. - Alan Turing
Hello World!
#include<stdio.h>
void main(){
printf("Hello World!");
}What is printf?
Its a function to print output.
What is function?
Functions
A function is a group of statements that together perform a task.
#include<stdio.h>
It imports the stdio.h header file from library.
stdio.h header file
A file in C library that contains functions related to standard input and output.
void main()
main() function is the entry point of a C program from where the execution begins.
The curly braces {...}
They represent the start and end point, i.e. the scope of the lines written inside them.
Questions
Lets add two numbers
#include<stdio.h>
void main(){
int a,b,c;
a = 4;
b = 7;
c = a+b;
}Datatypes
The data storage format that a variable can store a data to perform a specific operation.
Some of the datatypes commonly used
Variables
Variables are simply names used to refer to some location in memory – a location that holds a value with which we are working.
Arithmetic Operators
The operators which perform some arithmetic operations like adding, subtracting, multiplying etc.