Be A programmer in 1 2 3 Steps Learn C in 3 Steps Be A programmer in 1 2 3 Steps Abhilash Badami

Steps Step 1 : Know the History of C Language Step 2 : Why only C Language Step 3 : Simple Problems Solving and Fun with Maths

History of C language Many of the important ideas of C stem from the language BCPL, developed by Martin Richards. The influence of BCPL on C proceeded indirectly through the language B, which was written by Ken Thompson in 1970. In 1972 Dennis Ritchie at Bell Labs writes C and in 1978 the publication of The C Programming Language by Kernighan & Ritchie caused a revolution in the computing world.

Know more about C C language is a case sensitive language. C language is an user defined language with large instruction sets. C language uses compiler for convertion of code. C language is a syntax oriented language.

Why only C Language To learn the programming in c First you should know about the logic of it. What is Logic then ? Logic is the problem solving Method which the programmer will use before Writing the Program.

There are two types of problem solving Methods 1. Flowchart 2. Algorithm What is Flowchart then ? Diagrammatic representation of the given problem Statement. What is Algorithm ? It is the Step by step representation of the given problem Statement. Can we Solve a Problem With the Help of Flowchart and Algorithm ? What is your answer ?

But in Math's We solve problems using Numbers But in Math's We solve problems using Numbers ? Why flowchart and algorithm in “C” Flowchart and algorithm are the two simple methods which will help the programmer to program the problem statement in C. C language helps only to solve Mathematical Problems ? No it also helps in solving the logical as well as ratios and many more.

Let us know more about Flowcharts As we said flowcharts are the diagrammatic representations. Does it include circles , squares and rectangles? Ans : Yes Let us know which shape will do what action

= This shape indicates the Beginning and end of Flowchart ie: Start and End. = This shape indicates the continuity of the flow chart. = This shape indicates the decision making statements. = This shape indicates the steps. = This indicates the action = Connecting Lines

Do you know about this symbols ..? * Asterix - Used for multiplication operation / division slash – used for division operation Can you identify this symbols ‘ + ‘ ‘ - ’ % Modules – used for division with reminder options

Let us solve a simple problem using Maths logic Add two numbers Sol :- let a=5 and b=11 sum= a+b sum= 5+11 sum= 16

Now we will solve the same problem using Flowchart This Indicates the beginning of Flow Chart Start Where as both shapes indicates some action that is Input to PC Input A=5 Input B=11 Arithmetic and logic operations are performed here Sum = A+B Print Sum As we saw above this indicates action that is output Indicates End of Flow Chart END

Which is easy method of solving a problem ? Yes C language is Easier than Math's Correct….!! Ok , can we work on some other questions like this Are you ready …???

Find the solutions for this questions Draw a flow chart for subtraction Draw a flow chart for division Draw a flow chart for multiplication Draw a flow chart for finding square of a number Draw a flow chart for finding cube of a number

Flow chart for subtraction Start Input A=10 Input B=05 Sub = A - B Print Sub END

Flow Chart for Division Start Input A=10 Input B=05 div= A/B Print Div END

Flow Chart for Multiplication Start Input A=3 Input B=5 mul= A*B Print Sum END

Flow chart for finding square of number Start Input A=5 Square = A*A Print squ END

Flow Chart For finding Cube of number Start Input A=5 Cube= A*A*A Print Cube END

Yes I know you are thinking about Logical Problems right….!! For solving Logical Problems we need to know about IF and ELSE statements. Yes IF and ELSE statement are nothing like true or false statements IF refers to : IF statement 1 is true print statement 1 ELSE print statement 2

Confused …!! Let me Explain Assume two values as A=5 and B=6 now we have to find biggest number between A and B If A>B print A is Big Number Else Print B is Big Number

Let us put the same problem in flow chart This Indicates the beginning of Flow Chart Start Where as both shapes indicates action that is Input to PC Input A=05 This Indicates Decision making of the input problem Input B=06 If A is greater it prints A is big If A>B Else Print A is big Print B is big If B is greater it prints B is big True False What does this Indicate ? END

Still Confused … !! Ok let me explain with different example Start Input A=10 Input B=03 If A>B Else Print A Print B True False END

Is there a way such that we need not to use IF and Else Statements …?? Yes we have some special instructions or operations such that if and else statements can be avoided. If we have such instructions then why do we need IF and ELSE statements. Because to Solve complex programs we need the help of IF and ELSE statements.

Take a look at this Flow Chart Logic of this Flow Chart Both inputs A and B are taken first Use the special operation (A>B)? This operation has an in built commend of IF and ELSE statement. It compares first a>b or not If it is greater then it prints A is big Else it goes to next step where it prints B is Big Start Input A=05 Input B=06 Big = (A>B)? Print A is big Print B is Big END

Now you have to tell me answer for this Start What is your Answer What does the computer print ..? Input A=10 Input B=06 Big = (A>B)? Print A is big Print B is Big END

END OF SESSION 1 Find Interesting topics in up coming sessions Know about while loop , for loop , do while loop . Know more about writing algorithms Be a programmer…!!!

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