Introduction to C++ Operators & Expression

Post by Kevin Qu on February 15, 2020

Every time I type this code I get an error and I don't know why can someone please tell me what's wrong with the following code?

int a (5);
int b (10);
int c  (25);
cout << " b is " << b;
b = a+c
cout << " b changed to " << b;
a = a+1
cout << " a incremated to " << a;

Post by Hanchul Choi on October 27, 2016

@26.58 Operator Precedence, shouldn't post-unary operators be below the assignment?
I think earlier in the video you said pre-unary operators get done before assignment, but post-unary operators get done after the assignment operator.

Post by ido montia on July 20, 2015

Q 4 homeWork, "then truncating the part after the decimal point" how i do it alvin?

this is my code :

#include<iostream>
using namespace std;

int main(){

float E, S, W;
cout << "The sales taxes collected by East Harlem : ";
cin >> E;

cout << "The sales taxes collected by South Boston : ";
cin >> S;

cout << "The sales taxes collected by West Hollywood : ";
cin >> W;

float sum;

sum = float(E)+ float(S) + float(W);
cout << "The Answer is :  " << (sum + 0.5);
cin.get();
cin.get();
cin.get();

Post by Timothy White on October 24, 2014

Does C++ not have identical/not identical operators? (=== and !==)
Several other languages I know use these because '1' == 1 is true in those languages. Is that different in C++?

Post by Ram Manohar Oruganti on February 6, 2014

int a = 5, b;
b = a++*7+9*++a;
cout<<a; // prints 7 (which is fine)
cout<<b; // prints 96 and not 98! Why is it so?

Post by Adulaziz Al-etaibi on December 9, 2013

hi alvin , can you look at my code ,  it worked but can you evaluate it  


homework 4
#include <iostream>
using namespace std;

int main (){
   
   double east , south ,west, tax_e , tax_s, tax_w, total_amount;
   
   
   
   cout << "enter the sale e branch sales aamount?"<<endl;
   
   cin >> east;
   cout << " enter sale tax percentage ?" << endl;
   cin >> tax_e;
   
   cout << "enter sales and and taxes branch s ?"<<endl;
   
   cin >> south;
   cout << " enter sale tax percentage ?" << endl;
   cin >> tax_s;
   
   cout << "enter sales and and taxes branch  w ?"<<endl;
   
   
   cin >>  west;
   cout << " enter sale tax percentage ?" << endl;
   cin >> tax_w;
   
   tax_e *= east;
   tax_s *= south;
   tax_w *= west;
   cout << tax_e << tax_s << tax_w;
   total_amount = (int)tax_e + (int)(tax_s +(int) tax_w);
   
   cout << "total tax amount is?
" << total_amount;
}

Post by G Johnson on October 1, 2013

I can't see the answers when I click on the answer link. Could you tell me the same answer you told Karpis Sanosyan?

Post by G Johnson on September 25, 2013

Im having the same issue as Karpis Sanosyan, when I run the program, the prompt goes out if I press a key and it doesn't show my program