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# ch 3 - Relational operators > > < <= =!= Greater than or...

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Relational operators : > >+ < <= == != Greater than or less than. == - tests for quality. != - not equal Logical operators - && || ! && - “and” operator || = logical ‘or’, if it sees a true anywhere in the statement it will return true. It needs everything to be false for it to be return false. ! – takes logical value and converts it. If value is true, it will make it false or vise versa on it’s right hand side Cout << (1> 2) << “\n\n”; - produces a zero which is considered false. A non-zero is a true statement Cout << (1> 2) && (3>4) << “\n\n”; both must be true Cout << (1<2) || (3> 4) ) << “\n\n”; will return true If statement, if-else statement, if-else if-else statement Int x; Cout<< “please enter value of x”; Cin >> x; If(x > 2) ( Cout << “x is greater than 2 \n\n”; ) cout << “after if statement \n\n”; OR If(x > 2) Cout << “x is greater than 2 \n\n”;(must be under if) cout << “after if statement \n\n”; If(x > 2) ( Cout << “x is greater than 2 \n\n”; ) Else { Cout << “I’m doing the else \n\n”; } cout << “after if statement \n\n”; If(x > 2) {

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Cout << “x is greater than 2 \n\n”; }
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