The same as in MS visual C, GCC and any other version of C.
The conditional statement has two forms:
if( expression ) statement
If the expression evaluates to nonzero, then the statement is executed, otherwise it is ignored.
if( expression ) statement elsestatement
If the expression evaluates to nonzero, then the first statement is executed, otherwise the second statement is executed.
In either form, the statements may be a single command, or may be multiple commands enclosed within braces {}. The statements may also be if statements themselves.
Any statement that executes as the result of a conditional expression being evaluated true is a conditional statement.
if(<conditional_expression>)
// conditional statements go here
else if(< conditional_expression >)
...// conditional statements go here
else
...// conditional statements go here
switch(conditional_expression)
{
case(condition_1): // conditional statements go here; break;
case(condition_n): // conditional statements go here; break;
default: // conditional statements go here
}
while(condition_expression){
// conditional statements go here
}
do{
// conditional statements go here
}while(conditional_expression);
The ternary operator (?:) is the conditional operator. It is ternary because it is the only operator that has three operands. They are:
conditional_expression ? true_expression: false_expression
The conditional_expression must be a Boolean expression evaluating true or false. If the expression evaluates true, the true_expression is evaluated, otherwise the false_expression is evaluated.
Note that unlike an if() statement, the conditional operator can be used as an expression in its own right:
void foo (unsigned n) {
for (unsigned i=0; i } In this example, the expression (i=n-1) ? "" : ", "evaluates to the string ", " (the false expression) for all i foo (10); // output: "0, 1, 2, 3, 4, 5, 6, 7, 8, 9"
Statements that check an expression then may or may not execute a statement or group of statements depending on the result of the condition.
In the C language, the continue statement can only be used within a loop (for, while, or do). Upon execution, control transfers to the beginning of the loop.
It has no use in C++ itself, it is only useful in Borland Turbo C++. It provides generic graphics support for Borland Turbo C++ applications.
TLINK is the Turbo C++ linker utility. You use it to link the object files created by the Turbo C++ compiler.
If is a keyword that introduces a conditional expression. If the expression evaluates true, the statement or statement block that follows is executed, otherwise control is passed to the line following the statement or statement block, which may be another conditional expression. if( expression_1 ) { // do something when expression_1 is true } else if( expression_2) { // do something when expression_1 is false but expression_2 is true } else { // do something when both expression_1 and expression_2 are false }
Yes.
Statements that check an expression then may or may not execute a statement or group of statements depending on the result of the condition.
if is a conditional statement to check the given condition
A conditional statement is true if, and only if, its contrapositive is true.
In the C language, the continue statement can only be used within a loop (for, while, or do). Upon execution, control transfers to the beginning of the loop.
for,while,do while
return 0
while, for, do-while (and perhaps goto)
How the turbo c plus plus use what in the computer.
At the first statement of function main.
[object Object]
Use them carefully.