C++ functions

C++ functions

1. Write a C++ program that will display the calculator menu. The program will prompt the user to choose the operation choice (from 1 to 5... 10:36 AM

1. Write a C++ program that will display the calculator menu.

The program will prompt the user to choose the operation choice (from 1 to 5). Then it asks the user to input two integer vales for the calculation. See the sample below. 
 MENU 

          1. Add
          2. Subtract
          3. Multiply
          4. Divide
          5. Modulus
Enter your choice: 1
Enter your two numbers: 12 15
Result: 27
Continue? y
The program also asks the user to decide whether he/she wants to continue the operation. If he/she input ‘y’, the program will prompt the user to choose the operation gain. Otherwise, the program will terminate.

Solution:

#include <cstdlib> 
#include <iostream> 
#include<iomanip> 
using namespace std; 
void displaymenu(){ 
cout<<"==================================================="<<"\n"; 
cout<<"                         MENU                                  "<<"\n"; 
cout<<"==================================================="<<"\n"; 
cout<<"     1.Add"<<"\n"; 
cout<<"     2.Subtract"<<"\n"; 
cout<<"     3.Multiply"<<"\n"; 
cout<<"     4.Divide"<<"\n"; 
cout<<"     5.Modulus"<<"\n"; 
     } 
int Add(int a,int b){ 
    return(a+b); 
} 
 int Substract(int a, int b){ 
    return(a-b); 
} 
int Multiply(int a, int b){ 
    return(a*b); 
} 
float Divide(int a,int b){ 
      return(a/b); 
} 
int Modulus(int a, int b){ 
    return(a%b); 
} 
 int main(int argc, char *argv[]) 
{ 
 //show menu 
displaymenu(); 
int yourchoice; 
int a; 
int b; 
char confirm; 
do 
{ 
cout<<"Enter your choice(1-5):"; 
cin>>yourchoice; 
cout<<"Enter your two integer numbers:"; 
cin>>a>>b; 
cout<<"\n"; 
switch(yourchoice){ 
 case 1:cout<<"Result:"<<Add(a,b);break; 
 case 2:cout<<"Result:"<<Substract(a,b);break; 
 case 3:cout<<"Result:"<<Multiply(a,b);break; 
 case 4:cout<<"Result:"<<Divide(a,b);break; 
 case 5:cout<<"Result:"<<Modulus(a,b);break; 
 default:cout<<"invalid"; 
                   } 
  cout<<"\nPress y or Y to continue:"; 
       cin>>confirm; 
}while(confirm=='y'||confirm=='Y'); 
  system("PAUSE"); 
   return EXIT_SUCCESS; 
}

2. Write a C++ program (using function overloaded) to sort 10 integer values, or 10 long values, or 10 double values.

Solution:

#include <cstdlib> 
#include <iostream> 
#include<iomanip> 
#include<cmath> 
using namespace std; 
void mysort(int vallist[]){ 
     int i,j; 
    int temp; 
      for(i=0;i<10;i++) 
     for(j=0;j<10;j++) 
      if(vallist[j]>vallist[j+1]){ 
         temp=vallist[j]; 
         vallist[j]=vallist[j+1]; 
         vallist[j+1]=temp; 
       } 
        for(i=0;i<10;i++)cout<<vallist[i]<<"\n"; 
} 
void mysort(float vallist[]){ 
    int i,j; 
    float temp; 
      for(i=0;i<10;i++) 
     for(j=0;j<10;j++) 
      if(vallist[j]>vallist[j+1]){ 
         temp=vallist[j]; 
         vallist[j]=vallist[j+1]; 
         vallist[j+1]=temp; 
       } 
        for(i=0;i<10;i++)cout<<vallist[i]<<"\n"; 
 } 
void mysort(double vallist[]){ 
     int i,j; 
    double temp; 
      for(i=0;i<10;i++) 
     for(j=0;j<10;j++) 
      if(vallist[j]>vallist[j+1]){ 
         temp=vallist[j]; 
         vallist[j]=vallist[j+1]; 
         vallist[j+1]=temp; 
       } 
       for(i=0;i<10;i++)cout<<vallist[i]<<"\n"; 
} 
int main(int argc, char *argv[]) 
{ 
  int vallist[]={23,2,34,23,43,22,32,32,43,34}; 
  mysort(vallist); 
  system("PAUSE"); 
  return EXIT_SUCCESS; }