- + String concatenation
- = String compare
- == String copy
- / Finding substring
- << Displaying the string from the object of class T4Tutorias
- >> Reversing the string
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/******************************************************* String operations using operator overloading in C++ *******************************************************/ #include<iostream> #include<cstring> using namespace std; //class definition class T4Tutorials{ private: //character array to denote string char str[30]; public: //declarating the functions void input(); void show(); void operator== (T4Tutorials formal_parameter); int operator= (T4Tutorials formal_parameter); void operator+ (T4Tutorials formal_parameter); void operator<< (T4Tutorials formal_parameter); void operator>> (T4Tutorials formal_parameter); int operator/ (T4Tutorials formal_parameter); void palindrome(); }; // Function definitions void T4Tutorials::input() { cout<<"\nPlease Enter the string : "; cin>>str; } //function definition for show() void T4Tutorials::show() { cout<<"\n"<<str; } //Function definition for operator "==" void T4Tutorials::operator== (T4Tutorials formal_parameter) { strcpy(formal_parameter.str,str); cout<<"\n\tCopied String is : "<<formal_parameter.str; } //Function definition for operator "=" int T4Tutorials::operator= (T4Tutorials formal_parameter) { if(strcmp(str,formal_parameter.str)==0) return 1; //strings are equal return 0; //strings are not equal } //Function definition for operator "+" void T4Tutorials::operator+ (T4Tutorials formal_parameter) { strcat(str,formal_parameter.str); cout<<"\n\t--String After Concat is : "<<str; } //Function definition for operator "<<" void T4Tutorials::operator<< (T4Tutorials formal_parameter) { cout<<"\n\t--The string you entered is :"<<formal_parameter.str; } //Function definition for operator ">>" void T4Tutorials::operator>> (T4Tutorials formal_parameter) { int i; cout<<"\n\t--The string after reversing is : "; for(i=strlen(formal_parameter.str);i>=0;i--) cout<<formal_parameter.str[i]; } // int T4Tutorials::operator/ (T4Tutorials formal_parameter) { int flag=0,k,i,j,len=strlen(str),len1=strlen(formal_parameter.str)-1; for(i=0;i<len;i++) { if(str[i]==formal_parameter.str[0]) { if(str[i+len1]==formal_parameter.str[len1]) { for(j=i,k=0;j<i+len1+1,k<len1;j++,k++) { if(str[j]==formal_parameter.str[k]) flag=1; else { flag=0; break; } } } } } if(flag==0) return 0; //not a substring return 1; //it is a substring } //Function definition for palindrome() void T4Tutorials::palindrome() { int i,j,flag=0; for(i=0,j=strlen(str)-1;i<=strlen(str),j>=0;j--,i++) { if(str[i]!=str[j]) { flag=1; cout<<"\n\t****Not a palindrome****"; break; } else flag=0; } if(flag==0) cout<<"\n\t--Palindrome--"; } //start of main function int main() { int opt,c,opt1=1; //object declaration T4Tutorials a,b; while(opt1==1 && opt!=8) { //showing menu to the user cout<<"\nMain Menu\n\t1.Equality\n\t2.String Copy\n\t3.Concat"; cout<<"\n\t4.Show\n\t5.Reverse\n\t6.Palindrome\n\t7.Sub String"; cout<<"\n\t8.Exit\n"<<endl<<"Please Enter your choice:"; //taking user choice cin>>opt; //handling user choice switch(opt) { case 1: cout<<"\nEnter the 1st string-\n"; a.input(); cout<<"\nEnter the 2nd string-\n"; b.input(); c=a=b; if(c==1) cout<<"\n\t****Strings are Equal****\n"; else cout<<"\n\t****Strings are not Equal****\n"; break; case 2: a.input(); //using function overloading for copying string a==b; break; case 3: cout<<"\nEnter the 1st string-\n"; a.input(); cout<<"\nEnter the 2nd string-\n"; b.input(); //using function overloading for concatenation a+b; break; case 4: a.input(); b<<a; break; case 5: a.input(); //showing string using "<<" operator b>>a; break; case 6: a.input(); //check for palindrome a.palindrome(); break; case 7: cout<<"\nEnter the Main string-\n"; a.input(); cout<<"\nEnter the other string-\n"; b.input(); //using operator overloading for finding substring c=a/b; if(c==1) cout<<"\n\t****Substring****\n"; else cout<<"\n\t****Not a substring****\n"; break; case 8: return 0; default: cout<<"Invalid choice..try again\n"; } if(opt!=8){ cout<<"\n\n\tDo you want to continue(Press 1 to continue)"; cin>>opt1;} } return 0; } |
