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Anonymous
You cannot have a function named else, because it is a reserved word.
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You can use the pow() function in math.h.
To specify the return-type of the function.
Use the atoi() or atol() function.
Nothing, it is a security hole. Use 'fgets' instead.
The c language does not have template functions. That is a c++ thing.
Function 'clrscr' is not part of the C language. Or the standard libraries. It is MS-DOS specific function, use the help for details (clrscr means clear the screen).
Include the header file math.h and use the function acos(d)
C language doesn't say anything about graphics, it is platform-dependent.
In UNIX: use function chmod
Use function open or creat or fopen.
There is no "elseif" statement in C. You can only use "else" and "if" separately. This is a good reason for switch/case/break.
I guess you meant the following:'In C language, when you call a function,the parameters are passed by-value.'