Program is the set of instructions which is run by the computer to perform specific task.
The task of developing program is called programming.
Problem Solving Technique:
Sometimes it is not sufficient just to cope with problems. We have to solve that
problems. Most people are involving to solve the problem. These problem are occur
while performing small task or making small decision. So, Here are the some basic
steps to solve the problems
Step 1: Identify and Define Problem
Explain you problem clearly as possible as you can.
Step 2: Generate Possible Solutions
List out all the solution that you find. Don’t focus on the quality of the solution
Generate the maximum number of solution as you can without considering the quality of
the solution
Step 3: Evaluate Alternatives
After generating the maximum solution, Remove the undesired solutions.
Step 4: Decide a Solution
After filtering all the solution, you have the best solution only. Then choose on of the
best solution and make a decision to make it as a perfect solution.
Step 5: Implement a Solution:
After getting the best solution, Implement that solution to solve a problem.
Step 6: Evaluate the result
After implementing a best solution, Evaluate how much you solution solve the problem.
If your solution will not solve the problem then you can again start with Step 2.
,Algorithm:
Algorithm is the set of rules that define how particular problem can be solved in finite
number of steps. Any good algorithm must have following characteristics
1. Input: Specify and require input
2. Output: Solution of any problem
3. Definite: Solution must be clearly defined
4. Effective
5. Finite: Steps must be finite
6. Correct: Correct output must be generated
Advantages of Algorithms:
1. It is the way to sole a problem step-wise so it is easy to understand.
2. It uses definite procedure.
3. It is not dependent with any programming language.
4. Each step has it own meaning so it is easy to debug
Disadvantage of Algorithms:
1. It is time consuming
2. Difficult to show branching and looping statement
3. Large problems are difficult to implement
Flowchart:
The solution of any problem in picture form is called flowchart. It is the one of the most
important technique to depict an algorithm.
Advantage of Flowchart:
1. Easier to understand
2. Helps to understand logic of problem
3. Easy to draw flowchart in any software like MS-Word
4. Complex problem can be represent using less symbols
5. It is the way to documenting any problem
6. Helps in debugging process
Disadvantage of Flowchart:
1. For any change, Flowchart have to redrawn
, 2. Showing many looping and branching become complex
3. Modification of flowchart is time consuming
Symbol Used in Flowchart:
Example: Algorithm and Flowchart to check odd or even
Algorithm:
Step 1: Start
Step 2: Declare a variable x
Step 3: Take a input from user and store in x
Step 4: IF x % 2 == 0 THEN
PRINT Even
ELSE
PRINT Odd
Step 5: End