C Language

Compiled by: C. Mishra and Anupam Sharma

What you should know about ‘C’

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Compiled by: C. Mishra and Anupam Sharma

I The C Language

I I I I I I I I I I I I I I 1: What is a local block? 2: Should variables be stored in local blocks? 3: When is a switch statement better than multiple if statements? 4: Is a default case necessary in a switch statement? 5: Can the last case of a switch statement skip including the break? 6: Other than in a for statement, when is the comma 7: How can you tell whether a loop ended prematurely? 8: What is the difference between goto and longjmp() and setjmp()? 9: What is an lvalue? 10: Can an array be an lvalue? 11: What is an rvalue? 12: Is left-to-right or right-to-left order guaranteed for operator precedence? 13: What is the difference between ++var and var++? 14: What does the modulus operator do?

II Variables and Data Storage

II 1: Where in memory are my variables stored? II 2: Do variables need to be initialized? II 3: What is page thrashing? II 4: What is a const pointer? II 5: When should the register modifier be used? Does it really help? II 6: When should the volatile modifier be used? II 7: Can a variable be both const and volatile ? II 8: When should the const modifier be used? II 9: How reliable are floating-point comparisons? II 10: How can you determine the maximum value that a numeric Variable can hold? II 11: Are there any problems with performing mathematical operations on different variable types? II 12: What is operator promotion? II 13: When should a type cast be used? II 14: When should a type cast not be used? II 15: Is it acceptable to declare/define a variable in a C header? II 16: What is the difference...