The ones who are crazy enough to think they can change the world are the ones who do.- Steve Jobs
Keywords are those words which tells the compiler what to do . In C Programming, keywords are otherwise said to be reserved words. Keywords are always in lowercase letters. Keywords cannot be changed by a programmer. Keywords cannot be used as variable name, function name, array name by a programmer. Refer for More C Keywords
Generally, Variables are things which are all changable. We encounter several variables in our day-to-day life. Some Examples:
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An identifier is a name that identifies unique things. here things may be a person, object, idea or anything. The following diagram clearly represents the concept of identifier. Refer for More C Identifiers.
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