Write a program in C++ to Check Whether a Number can be Express as Sum of Two Prime Numbers using the constructor overloading and destructor.
C++ Program with constructor to Check Whether a Number can be Express as Sum of Two Prime Numbers
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#include<iostream> using namespace std; class T4Tutorials { protected : int n, i, num1,num2,num3,j; public : T4Tutorials() { num1=1,num2=1,num3=0; cout<<"Check Whether a Number can be Express as Sum of Two Prime Numbers:"<<endl; cout<<"----\n"; cout<<"Input a positive integer: "<<endl; cin>>n; for(i=3; i<=n/2; i++) { /*prime number?*/ num1=1; num2=1; for(j=2; j<i; j++) { if(i%j==0) { num1=0;j=i;} } for(j=2; j<n-i; j++) { if((n-i)%j==0) { num2=0;j=n-i;} } if(num1==1 && num2==1) { printf("%d = %d + %d \n",n,i,n-i); num3=1;} } if(num3==0) { cout<<"can not be expressed as sum of two prime numbers."<<endl; } } }; int main() { T4Tutorials a; } |
Output
Check Whether a Number can be Express as Sum of Two Prime Numbers:input a positive integer:
5
can not be expressed as sum of two prime numbers.
C++ Program with destructor to Check Whether a Number can be Express as Sum of Two Prime Numbers
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#include<iostream> using namespace std; class T4Tutorials { protected : int n, i, num1,num2,num3,j; public : ~T4Tutorials() { num1=1,num2=1,num3=0; cout<<"Input a positive integer: "; cin>>n; for(i=3; i<=n/2; i++) { /*check for prime number?*/ num1=1; num2=1; for(j=2; j<i; j++) { if(i%j==0) { num1=0;j=i;} } for(j=2; j<n-i; j++) { if((n-i)%j==0) { num2=0;j=n-i;} } if(num1==1 && num2==1) { printf("%d = %d + %d \n",n,i,n-i); num3=1;} } if(num3==0) { cout<<"\n%d can not be expressed as sum of two prime numbers.\n\n"; } } }; int main() { T4Tutorials a; } |
C++ Program with constructor overloading to Check Whether a Number can be Express as Sum of Two Prime Numbers
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#include<iostream> using namespace std; class T4Tutorials { protected : int n, i, num1,num2,num3,j; int flg5,flg6,flg4; public : T4Tutorials (int one) { num1=1,num2=1,num3=0; for(i=3; i<=one/2; i++) { /*check for prime number?*/ num1=1; num2=1; for(j=2; j<i; j++) { if(i%j==0) { num1=0;j=i;} } for(j=2; j<one-i; j++) { if((one-i)%j==0) { num2=0;j=one-i;} } if(num1==1 && num2==1) { printf("%d = %d + %d \n",one,i,one-i); num3=1;} } if(num3==0) { cout<<one<<"can not be expressed as sum of two prime numbers.\n\n"; } } T4Tutorials (int two ,int three) { cout<<"Now checking Your input No.1 :"<<two; cout<<"\n\n"; num1=1,num2=1,num3=0; for(i=3; i<=two/2; i++) { /*---------- check for prime---------------*/ num1=1; num2=1; for(j=2; j<i; j++) { if(i%j==0) { num1=0;j=i;} } for(j=2; j<two-i; j++) { if((two-i)%j==0) { num2=0;j=two-i;} } if(num1==1 && num2==1) { printf("%d = %d + %d \n",two,i,two-i); num3=1;} } if(num3==0) { cout<<two<<" can not be expressed as sum of two prime numbers.\n\n"; } cout<<"\n\nNow checking Your input No.2 :"<<three; cout<<"\n\n"; num1=1,num2=1,num3=0; for(i=3; i<=three/2; i++) { /*---------- check for prime---------------*/ flg4=1; flg5=1; for(j=2; j<i; j++) { if(i%j==0) { flg4=0;j=i;} } for(j=2; j<three-i; j++) { if((three-i)%j==0) { flg5=0;j=three-i;} } if(flg4==1 && flg5==1) { printf("%d = %d + %d \n",three,i,three-i); flg6=1;} } if(flg6==0) { cout<<three<<"can not be expressed as sum of two prime numbers.\n\n"; } } }; int main() { int option; cout<<"Enter 1 of Single parameter T4Tutorialsor \n"; cout<<"\nEnter 2 For Multiple Paramter constucor \n"; cout<<"\nEnter 1 or 2 : "; cin>>option; system("cls"); //this function is to clear the screen if(option ==1) { cout<<"You Have Slected Single Paramater"; cout<<"T4Tutorialsor\n"; int one; cout<<"Enter number to check : "; cin>>one; T4Tutorials a(one); } else if(option==2) { cout<<"You Have slected Multiple Paramater "; cout<<"T4Tutorialsor\n"; int two,three; cout<<"Enter First number to check : "; cin>>two; cout<<"\nEnter Second number to check : "; cin>>three; T4Tutorials a(two, three); } else { cout<<"Your Input in Wrong try Agin \n\n\n"; } } |