A nested if is an if statement that is nested within another if statement.
int x=1, y=2;
if( x==1 )
{
if( y==1 ) // nested if.
{
// x==1 and y==1
}
else if( y==2 ) // another nested if.
{
// x==1 and y==2
}
else
{
if( y==1 ) // yet another nested if.
{
// x!=1 and y==1
}
else if( y==2 ) // and another nested if.
{
// x!=1 and y==2
}
}
x = 12;
The semi-colon converts a C++ expression into a statement.
Don't write, it is already written, google for 'cpp'.
Statements that check an expression then may or may not execute a statement or group of statements depending on the result of the condition.
Unconditional statements are statements that are invoked unconditionally. Conditional statements have a controlling expression, while unconditional statements do not. For example: void f (bool b) { if (b==true) do_something(); // conditional statement (controlled by the expression b==true) do_something_else(); // unconditional (executes regardless of b's value) }
Control statements are statements that alter the flow of execution according to the evaluation of an expression (the condition). The C++ control statements are ifstatements, switch statements and the tertiary conditional operator, ?:.
There is no difference. Both statements are invalid.
See related links for an example.
x = 12;
The semi-colon converts a C++ expression into a statement.
Decision making statements make use of conditional expressions. In C++ there are three possibilities: if/else, switch/case and the ternary operator (?:).
Control instructions are instructions that alter the flow of execution. In C++ this include if, if-else statements, switch-case statements and the conditional ternary operator (?:), as well as loop structures (for, while, do-while) and procedural goto statements.
Don't write, it is already written, google for 'cpp'.
There are two stream operators: << (insert or put) and >> (extract or get). Output streams implement the insertion operator, input streams implement the extraction operator and input/output streams implement both operators.
Statements that check an expression then may or may not execute a statement or group of statements depending on the result of the condition.
There are several 'looping' statements in C++. They are:while () { }do { } while () ;for (index-start, index-end; index increment/decrement) { }They are used to repetitively execute statements as long as the statement(s) controlling the loop are true.
Unconditional statements are statements that are invoked unconditionally. Conditional statements have a controlling expression, while unconditional statements do not. For example: void f (bool b) { if (b==true) do_something(); // conditional statement (controlled by the expression b==true) do_something_else(); // unconditional (executes regardless of b's value) }