Because the expression num1++ evaluates to num1. You may want to do: ++num1 which evaluates to num1 + 1. Note however that both expressions increment num1 by one. Evaluating num1 in the next statement evalutes to the incremented value. In short In C, why doesn’t num1++ increment in the printf()? num1++ does increment num1 but … Read more
Introduction The ‘–>’ operator is a pointer operator in C/C++. It is used to access the members of a structure or union. It is also known as the structure dereference operator and is used to access the members of a structure or union through a pointer. This operator is used to access the members of … Read more
–> is not an operator. It is in fact two separate operators, — and >. The conditional’s code decrements x, while returning x‘s original (not decremented) value, and then compares the original value with 0 using the > operator. To better understand, the statement could be written as follows: while( (x–) > 0 ) 4 … Read more
>>>= is similar to += but with a unsigned right shift (>>>) operation. int foo = Integer.parseInt(“1000”, 2); //shift 3 times to the right : “1000” becomes “0001” = “1” foo>>>=3; System.out.print(Integer.toBinaryString(foo)); output : 1 solved Meaning of “>>>” in Java [duplicate]
if is not only a conditional statement but also executes code written in it i.e the condition is evaluated eg 1: if(a == 5) {} //checking value of a but if(a = 5) //assigning 5 to a but also checking value of a as Undefined, null eg 2: Similarly in a for…loop for(var i=0; i<10; … Read more
#include <string> #include <iostream> // std::cout & std::cin using namespace std; int main () { string str (“This is an example phrase.”); string::iterator it; str.erase (10,8); cout << str << endl; // “This is an phrase.” it=str.begin()+9; str.erase (it); cout << str << endl; // “This is a phrase.” str.erase (str.begin()+5, str.end()-7); cout << str … Read more
This is the C/C++/C#/Java/Javascript/Perl/PHP/Pike bitwise XOR assignment operator. An XOR (exclusive or) conditional statement evaluates to true if and only if one of the two operands involved is true. Example: 0 ^ 0 = false 1 ^ 0 = true 0 ^ 1 = true 1 ^ 1 = false //Regular OR would evaluate this … Read more
From: https://docs.oracle.com/javase/tutorial/java/nutsandbolts/op1.html You can also combine the arithmetic operators with the simple assignment operator to create compound assignments. For example, x+=1; and x=x+1; both increment the value of x by 1. 6 solved What does “+=” operator do? [duplicate]
Introduction The “+=” operator is a shorthand operator used in programming languages such as C, C++, Java, and JavaScript. It is used to add a value to a variable and assign the result to the same variable. This operator is often used in loops and other programming tasks to increment a variable by a certain … Read more
When you have a non-refcounting language (which JavaScript isn’t) and doing an assignment (‘=’, resulting in a copy operation) of a big object it can be “slow”. So a check if that copy operation is really necessary can save you a significant amount of time. But JavaScript is a native refcounting language: object1 = {a: … Read more
Type is an instance of the String object, it has the method String#equals(…) and that method returns a boolean… “!” this is the negation opeator and inverts any boolean value… so !type.equals(“auto”) is a boolean condition as result from comparing whether the String var with the name type has the value “auto” . solved What … Read more
It’s the left shift operator. It shifts the value left by 2 bits, effectively multiplying it with 2 to the power of 2 (the shift amount). a << b Is the same as: a * (2 to the power of b) 3 solved What is the “
var x = 5; // x = 5 x *= 2; // multiply x with 2 (x = 10) console.log(++x); // console.log x plus 1 (11) A more common way of using this syntax is with plus or minus: x += 1; // is a shorthand for x = x + 1; x *= 2; … Read more
A += 1 means A = A + 1. So A += A = a would be A = A + A = a (which obviously doesnt work). The error you seem to experience is not caused by this operator. Perhaps you mixed spaces with tabs, or you simply did not indent a certain line … Read more
Any non-zero number or non-null pointer is considered to have a logical value of “true”, whereas a number with value 0 or a null pointer is considered to have a logical value of “false”. The ! operator is the logical NOT operator (as opposed to a bit-wise NOT operator). It inverts the logical value of … Read more