Explain what header files do I need in order to define the standard library functions I use?

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Sir,please help me out with the code of this question. Write an interactive C program that will encode or decode multiple lines of text. Store the encoded text within a data file, so that it can be retrieved and decoded at any time. The program should include the following features: (a) Enter text from the keyboard, encode the text and store the encoded text in a data file. (b) Retrieve the encoded text and display it in its encoded form. (c) Retrieve the encoded text, decode it and then display the decoded text. (d) End the computation. Test the program using several lines of text of your choice.

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What is the difference b/w Structure & Class?

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How can I find out how much free space is available on disk?

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Explain what is the benefit of using an enum rather than a #define constant?

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How are pointers declared in c?

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Explain why can’t constant values be used to define an array’s initial size?

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What is the equivalent code of the following statement in WHILE LOOP format?

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Explain the use of keyword 'register' with respect to variables.

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can you change name of main()?how?

3 Answers   HCL, Siemens,

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consider the following C code main() { int i=3,x; while(i>0) { x=func(i); i--; } int func(int n) { static sum=0; sum=sum+n; return(sum); } the final value of x is

4 Answers   TCS,

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what is a NULL pointer?

2 Answers  

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