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If Else Statements

graph LR

  A(Start) --> B[Initialize Variables];
  B --> C{Condition};
  C -- Yes --> D[Execute If Block];
  C -- No --> E[Execute Else Block];
  D --> F[Display Result];
  E --> F;
  F --> G(End);

  style A fill:#f00,color:white,font-weight:bold,stroke-width:2px,stroke:yellow
  style G fill:#00f,color:white,font-weight:bold,stroke-width:2px,stroke:yellow

  subgraph Initialize_Variables
    B[Variables]
  end

  subgraph Condition
    C{Condition}
  end

  subgraph Execute_If_Block
    D[Execute If Block]
  end

  subgraph Execute_Else_Block
    E[Execute Else Block]
  end

  subgraph Display_Result
    F[Display Result]
  end

  style Initialize_Variables fill:##FC33FF,stroke:#FF6E40,stroke-width:5px;
  style Condition fill:##FC33FF,stroke:#045F7F,stroke-width:5px;
  style Execute_If_Block fill:##FC33FF,stroke:#3A9D23,stroke-width:5px;
  style Execute_Else_Block fill:##FC33FF,stroke:#4D5BFF,stroke-width:5px;
  style Display_Result fill:##FC33FF,stroke:#FF406A,stroke-width:5px;

Example

Problem

Take the age from user and then decide accordingly
1.  if age < 18.
    print --> You are not eligible for job.
2.  if age >= 18 and age <= 54.
    print --> You are eligible for job.
3.  if age >= 55 and age <= 57.
    print --> You are eligible for job, but retirement soon.
4.  if age > 57.
    print --> Retirement time.

Method-1

If_Else.cpp

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#include <bits/stdc++.h>
using namespace std;

int main() {
    int age;
    cin >> age;

    if(age < 18) {
        cout << "You are not eligible for job.";
    }
    if(age >= 18 and age <= 54) {
        cout << "You are eligible for job.";
    }
    if(age >= 55 and age <= 57) {
        cout << "You are eligible for job, but retirement soon.";
    }
    if(age > 57) {
        cout << "Retirement time.";
    }
    return 0;
}

Input: 22
Output: You are eligible for job.

Method-2

If_Else.cpp

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#include <bits/stdc++.h>
using namespace std;

int main() {
    int age;
    cin >> age;

    if(age < 18) {
        cout << "You are not eligible for job.";
    }
    else if(age <= 54) {
        cout << "You are eligible for job.";
    }
    else if(age <= 57) {
        cout << "You are eligible for job, but retirement soon.";
    }
    else if(age > 57) {
        cout << "Retirement time.";
    }
    return 0;
}

Input: 22
Output: You are eligible for job.

Method-3

If_Else.cpp

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#include <bits/stdc++.h>
using namespace std;

int main() {
    int age;
    cin >> age;

    if(age < 18) {
        cout << "You are not eligible for job.";
    }
    else if(age <= 54) {
        cout << "You are eligible for job.";
    }
    else if(age <= 57) {
        cout << "You are eligible for job, but retirement soon.";
    }
    else {
        cout << "Retirement time.";
    }
    return 0;
}

Input: 22
Output: You are eligible for job.

Method-4

If_Else.cpp

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#include <bits/stdc++.h>
using namespace std;

int main() {
    int age;
    cin >> age;

    if(age < 18) {
        cout << "You are not eligible for job.";
    }
    else if(age <= 57) {
        cout << "You are eligible for job";
        if(age >= 55) {
            cout << ", but retirement soon.";
        }
    }
    else {
        cout << "Retirement time.";
    }
    return 0;
}

Input: 22
Output: You are eligible for job.