Thursday, 13 September 2012

C++ Program to design a Five Function Calculator using Switch/Case

C++ Program to design a Five Function Calculator using Switch/Case

 #include <iostream.h>
#include <conio.h>
int main () {
main:
    int a,b,c,d,ans;
    double v1, v2, ans2;
    char yn;
    while (yn != 'n')
    {
    clrscr();
    cout<<"\n\n\n\t-_-_-_-_-_-_-_-_-  Five Function Calculator   _-_-_-_-_-_-_-_-_\n\n";
    cout<<"Select the operation .\n";
    cout<<"1. Multipication\n";
    cout<<"2. Division\n";
    cout<<"3. Subtraction\n";
    cout<<"4. Addition\n";
    cout<<"5. Power\n";
    cout<<"6. Exit\n";
    cout<<"Enter a number: [1-6]";
    cin>>ans;
    switch (ans) {
    case 1:
        goto multipication;
        break;
    case 2:
        goto division;
        break;
    case 3:
        goto subtraction;
        break;
    case 4:
        goto addition;
        break;
    case 5:
        goto power;
        break;
    case 6:
        cout<<"Thank You\n";
        return 0;

    }

multipication:
    cout<<"\n\t\t==================Multipication===============\n";
    cout<<"Enter your First Number: ";
    cin>>v1;
    cout<<"Enter your Second Number: ";
    cin>>v2;
    ans2=v1 * v2;
    cout<<"Answer: "<<ans2<<"\n\n";
    cout<<"Would like to solve another one <yn>: ";
    cin>>yn;
    goto main;
    return 0;

division:
    cout<<"\n\t\t==================Division===============\n";
    cout<<"Enter your First Number: ";
    cin>>v1;
    cout<<"Enter your Second Number: ";
    cin>>v2;
    if (v2==0) {
        cout<<"ERROR!!! You cannot divide anything by 0\n\n";
        goto main;
    }
    ans2=v1 / v2;
    cout<<"Answer: "<<ans2<<"\n\n";
    cout<<"Would like to solve another one <yn>: ";
    cin>>yn;
    goto main;
    return 0;

subtraction:
    cout<<"\n\t\t==================Subtraction===============\n";
    cout<<"Enter your First Number: ";
    cin>>v1;
    cout<<"Enter your Second Number: ";
    cin>>v2;
    ans2=v1 - v2;
    cout<<"Answer: "<<ans2<<"\n\n";
    cout<<"Would like to solve another one <yn>: ";
    cin>>yn;
    goto main;
    return 0;
addition:
    cout<<"\n\t\t==================Addition===============\n";
    cout<<"Enter your First Number: ";
    cin>>v1;
    cout<<"Enter your Second Number: ";
    cin>>v2;
    ans2=v1 + v2;
    cout<<"Answer: "<<ans2<<"\n\n";
    cout<<"Would like to solve another one <yn>: ";
    cin>>yn;
    goto main;
    return 0;
power:
    cout<<"\n\t\t==================Power===============\n";
    cout<<"Enter a number: ";
    cin>>v1;
    cout<<"Enter the Power: ";
    cin>>v2;
    ans2=v1;
    for(int i=2; i<=v2; i++)
    ans2 = ans2 * v1;
    cout<<"Answer: "<<ans2<<"\n\n";
    cout<<"Would like to solve another one <yn>: ";
    cin>>yn;
    goto main;
    return 0;
}
return 0;
}

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