C language

Srabon sabbir trail student Coderstrust Ctg :005 Id 1478

What is C Language

Invented by Ritchie

Invented in 1972

Published in 1978

Computer Language

Why use C Language

Mother language

Connect with registers

Run program fast

Develop apps & games

How a C program looks like

#include <stdio.h>int main (){ printf (“Hello World”); return 0;}

Header part

Main body

Keywords & Variables in C Language

int , float, char, if, else, for, while, switch, return, void. keywor

d

add_srabon, Add_srabon,ctg001, Addition, SUBTRACTION .

Variable

Data types and Constants in C Language

Integer data (-1, 0, 1) Float data (.-1, .1, .11) Character data (a ,b ,A)

Newline Character (\n) Horizontal tab (\t) Vertical tab (\v)

Data types

constant

An example of C program

#include <stdio.h>int main (){int a,b,add;printf (“Enter the numbers:”);scanf (“%d%d”,&a,&b);add=(a+b);printf (“The result is:%d\n”,add);return 0;}

Conditional operator

if, else if, else

print(true statement)

Conditions: block1&block2

trueprint(b

1)false

print(b2)

Looping in C Language

Continue execution

while loop , for loop,do while loop

Different times (10,100)

Function in C Language

Do fixed work

show result when called

Sub file of main function

ANY QUESTIONS?