if (condition) { statement; statement; . . statement; } Note the indentation of the lines and semi-colon after each statement. Semi-colons are necessary after every C statement. The indentation is only a matter of style. It makes the code easy to read and understand from where a block starts, ends and what kind of block it is. It does not affect the logic of the program. But the braces can affect the logic. We can also write a comment line to state the purpose of code block. Let's consider a simple example to explain the if statement. Suppose, we have ages of two students (say for the time being we have got these ages in variables). These variables are- age1 and age2. Now we say that if the age1 is greater than age2, then display the statement ‘Student 1 is older than student 2’. The coding for this program will be as below #include <iostream.h> main() { int age1, age2; age1 = 12; age2 = 10; if (age1 > age2) cout << “Student 1 is older than student 2”; }
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