C++ OPERATOR OVERLOADING – SHOUT CODERS
PROGRAM 1:
DEFINE A CLASS MAT OF SIZE M*N, DEFINE +, -, AND * OPERATOR
OF MAT OBJECTS. WRITE A CPP PROGRAM TO TEST ABOVE CLASS
FOR ABOVE OPERATIONS ON THE MAT OBJECTS.
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#include <iostream> #include <iomanip> class MAT { int m,n, mat[100][100]; public: void operator+(MAT); void operator-(MAT); void operator*(MAT); void getdata(); void display(); }; void MAT::getdata() { std::cout<<"Enter m: "; std::cin>>m; std::cout<<"Enter n: "; std::cin>>n; mat[m][n]; for(int i=0; i<m; i++) { for(int j=0; j<n;j++){ std::cout<<"Array["<<i<<"]["<<j<<"]: "; std::cin>>mat[i][j];} } } void MAT::display() { for(int i=0; i<m; i++) { for(int j=0; j<n; j++) { std::cout<<mat[i][j]<<" "; } std::cout<<std::endl; } std::cout<<std::endl; } void MAT::operator+(MAT m1) { if(m==m1.m && n==m1.n) { for(int i=0; i<m; i++) { for(int j=0; j<n; j++) { std::cout<<std::setw(3)<<mat[i][j]+m1.mat[i][j]; } std::cout<<std::endl; } } else { std::cout<<"Addition not possible"<<std::endl; } } void MAT::operator*(MAT m2) { int sum=0; if(n==m2.m) { for(int i=0; i<m; i++) { for(int j=0; j<m2.n; j++) { for (int k=0; k<m2.m; k++) { sum+=mat[i][k]*m2.mat[k][j]; } std::cout<<std::setw(4)<<sum; sum=0; } std::cout<<std::endl; } } else { std::cout<<"Multiplication not possible"<<std::endl; } } void MAT::operator-(MAT m3) { if (m==m3.m && n==m3.n) { for(int i=0; i<m; i++) { for(int j=0; j<n; j++) { std::cout<<std::setw(3)<<mat[j][j]-m3.mat[i][j]; } std::cout<<std::endl; } } else { std::cout<<"Subtraction not possible"<<std::endl; } } int main() { MAT ob1, ob2, add ,sub, mul; std::cout<<"Enter element in 1st array: "<<std::endl; ob1.getdata(); std::cout<<"Enter element in 2nd array: "<<std::endl; ob2.getdata(); std::cout<<"Array 1: "<<std::endl; ob1.display(); std::cout<<"Array 2: "<<std::endl; ob2.display(); std::cout<<"Addition: "<<std::endl; ob1+ob2; std::cout<<"Subtraction: "<<std::endl; ob1-ob2; std::cout<<"Multiplication: "<<std::endl; ob1*ob2; } // < IS FOR LESS THAN; > FOR GREATER THAN; [ FOR LEFT THIRD BRACKET; ] FOR RIGHT; |
INPUT- OUTPUT:
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Enter element in 1st array: Enter m: 3 Enter n: 3 Array[0][0]: 1 Array[0][1]: 2 Array[0][2]: 3 Array[1][0]: 4 Array[1][1]: 5 Array[1][2]: 6 Array[2][0]: 7 Array[2][1]: 8 Array[2][2]: 9 Enter element in 2nd array: Enter m: 3 Enter n: 3 Array[0][0]: 9 Array[0][1]: 8 Array[0][2]: 7 Array[1][0]: 6 Array[1][1]: 5 Array[1][2]: 4 Array[2][0]: 3 Array[2][1]: 2 Array[2][2]: 1 Array 1: 1 2 3 4 5 6 7 8 9 Array 2: 9 8 7 6 5 4 3 2 1 Addition: 10 10 10 10 10 10 10 10 10 Subtraction: -8 -3 2 -5 0 5 -2 3 8 Multiplication: 30 24 18 84 69 54 138 114 90 |
PROGRAM 2:
WRITE A PROGRAM CLASS NAME CLOCK WITH DATA MEMBERS, HOURS, MINUTES, AND SECONDS. WRITE A PROGRAM TO ADD TWO INPUT TIME USING OPERATOR OVERLOADING.
C++ PROGRAM:
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#include <iostream> class clockk { int m,s,h; public: clockk() { } void getdata() { std::cout<<"Enter values: "<<std::endl<<"Hour: "; std::cin>>h; std::cout<<"minutes: "; std::cin>>m; std::cout<<"seconds: "; std::cin>>s; } clockk operator+ (clockk b) { clockk temp; temp.h = h+b.h; temp.m=m+b.m; temp.s=s+b.s; return (temp); } void display(void) { if(s>=60) { m++; s-=60; } if(m>=60) { h++; m-=60; } std::cout<<h<<"h "<<m<<"m "<<s<<"s "<<std::endl; } }; int main() { clockk t1, t2, t3; std::cout<<"Enter first input: "<<std::endl; t1.getdata(); std::cout<<"Enter second input: "<<std::endl; t2.getdata(); t3=t1+t2; std::cout<<"T1= "; t1.display(); std::cout<<"T2= "; t2.display(); std::cout<<"Addition Result: "; t3.display(); } |
INPUT-OUTPUT:
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Enter first input: Enter values: Hour: 3 minutes: 30 seconds: 00 Enter second input: Enter values: Hour: 3 minutes: 30 seconds: 00 INITIALIZE T1= 3h 30m 0s T2= 3h 30m 0s Addition Result: 7h 0m 0s |
PROGRAM 3:
USING OVERLOADING ‘+’ OPERATOR TO CONCATENATE TWO STRING OBJECT.
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#include <iostream> #include <cstring> class string{ public: char s[20]; int size; void getstring(char str[]) { strcpy(s,str); } void operator+(string); }; void string::operator+(string ob) { strcat(s,ob.s); std::cout<<"\nConcatenated String is: "<<s; } int main() { string ob1,ob2; char string1[10],string2[10]; std::cout<<"Enter First string: "; std::cin>>string1; ob1.getstring(string1); std::cout<<"\nEnter second string: "; std::cin>>string2; ob2.getstring(string2); ob1+ob2; } |
INPUT-OUTPUT:
Enter First string: Shout
Enter second string: coders
Concatenated String is: Shoutcoders
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