#include #include using namespace std; int main () { /* d is for rectangular a height b width */ /* a is for absolute value of the given number a */ /* t is for tangent and the angle a is expressed in degrees */ /* c is for cosinus and the angle a is expressed in degrees */ /* s is for sinus and the angle a is expressed in degrees */ /* r is for radical, a is the base and b is the exponent */ /* l is for logarythm, a is the base and b is the exponent */ /* p is for power other signs like + - / * are the basics*/ float a, b; char shenja; cin >> a >> shenja >> b; if (shenja=='*') { cout << a*b ; } if (shenja=='+') { cout << a+b; } if (shenja=='-') { cout << a-b; } if (shenja=='/') { if (b==0) { cout<< "error"; } else { cout << a/b; } } if (shenja=='p') { cout << pow(a,b); } if (shenja=='l') { cout << log10 (b)/log10(a); } if (shenja=='r') { float c=1/b; cout<< pow(a,c) ; } if (shenja=='s') { float d=a*3.1415926535897932384626433832795/180; cout << sin(d); } if (shenja=='c') { float d=a*3.1415926535897932384626433832795/180; cout << cos(d); } if (shenja=='t') { float d=a*3.1415926535897932384626433832795/180; cout << tan(d); } if (shenja=='a') { cout << abs(a); } if (shenja=='d') { cout << "area:" << a*b << endl << "perimeter:" << 2*(a+b) ; } return 0; }

*Calculator*

Calculator