#define _USE_MATHS_DEFINES #include<cmath> #include<iostream> using namespace std; int main() { //M_PI=3.1415926536 double radius,circumference,area; char normal; cout<<"Enter desired radius"<<endl; cin>>radius; cout<<"Enter desired objective. choose from either circumference or area\n"; cin>>normal; switch(normal) { case 'circumference': circumference=double(normal); cout<<"The answer is\n"<<radius*M_PI*2; break; case 'area': area=double(normal); cout<<"The answer is\n"<<radius*M_PI*M_PI; break; default: cout<<"Don't know how to help you. Sorry!"<<endl; break; } return 0;

'area' is not acceptable as a char

'area' is not acceptable as a char

Does this code even compile? 😐

I swear it does and it always uses default

#define _USE_MATHS_DEFINES #include<cmath> #include<iostream> using namespace std; int main() { //M_PI=3.1415926536 double radius,circumference,area; char normal; cout<<"Enter desired radius"<<endl; cin>>radius; cout<<"Enter desired objective. choose from either circumference or area\n"; cin>>normal; switch(normal) { case 'circumference': circumference=double(normal); cout<<"The answer is\n"<<radius*M_PI*2; break; case 'area': area=double(normal); cout<<"The answer is\n"<<radius*M_PI*M_PI; break; default: cout<<"Don't know how to help you. Sorry!"<<endl; break; } return 0;

you defined normal as a char and then use it as a string

you defined normal as a char and then use it as a string

Ooh. So I should use string then

Ooh so I should have used a char array?

it should be better like press 1 to get circumference , press 2 to get area. instead of letting the user write

yes, or include <string> and then use string

it should be better like press 1 to get circumference , press 2 to get area. instead of letting the user write

Press 1? Press 2? How is that?

yh

I mean with 1 or 2 like case 1 case 2

yes

If code inside a case was more than one line

I think it's something like case 1: {cout <<circumference*M_PI*2 <<endl; } break;

Write a program to print menu as in (a) from printMenu() function. Then write a function, called simpleCalculator(). In the function, request the user to input two real numbers and one of the letter codes A, S, M, D or L. Based on the code entered by the user, the program needs to perform an appropriate arithmetic operation to the two numbers. Then, display the result of the operation. The letter codes and their operations are as listed below:------------------------------------------------ Simple Calculator Program --------------------------------------------------- A - Addition S - Subtraction M - Multiplication D - Division ---------------------------------------------------

the program needs to perform an appropriate arithmetic operation to the two numbers. Then, display the result of the operation

the program needs to perform an appropriate arithmetic operation to the two numbers. Then, display the result of the operation

????

i know i want some help only

like there should be a place in memory where the variable names are saved, or they are discarded at compile time?

#include<stdio.h> int main() { printf("%x", -1<<1); getchar(); return 0; }

#include<stdio.h> int main() { printf("%x", -1<<1); getchar(); return 0; }

#include<stdio.h> int main() { printf("%x", -1<<1); getchar(); return 0; }

%x outputs lowercase hexadecimal -1 is all ones in memory (if "two's compliment" is used, which is likely), A byte with all ones if "ff" in hexadecimal. << is a left bit shift, it moves all bits to the left, so the rightmost bit becomes zero

https://www.youtube.com/watch?v=BKzB6gdRyIM

# include <stdio.h> # define scanf "%s Geeks For Geeks " main() { printf(scanf, scanf); getchar(); return 0; }

# include <stdio.h> # define scanf "%s Geeks For Geeks " main() { printf(scanf, scanf); getchar(); return 0; }

so your code turns into this: # include <stdio.h> main() { printf("%s Geeks For Geeks ", "%s Geeks For Geeks "); getchar(); return 0; }

so your code turns into this: # include <stdio.h> main() { printf("%s Geeks For Geeks ", "%s Geeks For Geeks "); getchar(); return 0; }

@MRT_1400 template <typename T> struct Singleton { static T* get() { static T ins; return &ins; } T* operator->() const { return get(); } }; using: Singleton<Payload>::get()->interface_of_payload(); or Singleton<Payload>()->interface_of_payload();

i need to create in heap

i need to create in heap