Consider the following rules about integer constant in C 1. An integer constant must have at least one digit.2. An integer constant must not have a decimal point.3. An integer constant may be positive or negative.4. The default sign is positive.5. A maximum of one comma or blank is allowed. Which of the above are correct?

Consider the following rules about integer constant in C 1. An integer

1.	Consider the following rules about integer constant in C 1. An integer constant must have at least one digit.2. An integer constant must not have a decimal point.3. An integer constant may be positive or negative.4. The default sign is positive.5. A maximum of one comma or blank is allowed. Which of the above are correct?
A.	All
B.	1, 2, 3, 4 only
C.	1, 2, 3, 5
D.	2, 3, 4, 5 only
Answer» C. 1, 2, 3, 5

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