Page 263 - Computer_Science_F5

Computer Science The following Program Example 4.18 demonstrates the use of relational operators.
The output of the program is shown in Figure 4.34.

Program Example 4.18:

Use of relational operators
FOR ONLINE READING ONLY
#include <iostream>
using namespace std;
int main()
{
bool result;
cout<<”Condition : Return value”<<endl;
result = (5 == 5);
cout<<”5==5”<<” : “<< result<<endl;
result = (8>13);
cout<<”8>13”<<” : “<< result<<endl;
result = (22<=12);
cout<<”22<=12”<<” : “<< result<<endl;
result = (15!=17);
cout<<”15!=17”<<” : “<< result<<endl;
return 0;
}
Output:

Figure 4.34: Output of the program

(f) Logical operators

A relational operator involves only one condition at a time. To combine two or more
conditions, you can use logical operators. Logical operators include, !, | | and &&
operator. Table 4.11 shows logical operators, their meaning, examples and return
values.

Table 4.11: Logical operators
Operator Meaning Example Return value
! Logical NOT 45! = 67 1
| | Logical OR (6 > 3) | | (8! = 8) 1
&& Logical AND (5 < = 3) && (9 > = 5) 0

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for Advanced Secondary Schools

Computer Science Form 5.indd 254 23/07/2024 12:33