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Functions

How to declare a pointer to a function?
Does extern in a function declaration mean anything?
How can I return multiple values from a function?
Does C support function overloading?
What is the purpose of a function prototype?
What are inline functions?
How to declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
Can we declare a function that can return a pointer to a function of the same type?
How can I write a function that takes a variable number of arguments? What are the limitations with this? What is vprintf()?
With respect to function parameter passing, what is the difference between call-by-value and call-by-reference? Which method does C use?
If I have the name of a function in the form of a string, how can I invoke that function?
What does the error, invalid redeclaration of a function mean?
How can I pass the variable argument list passed to one function to another function.
How do I pass a variable number of function pointers to a variable argument (va_arg) function?
Will C allow passing more or less arguments than required to a function.
Whats the difference between gets() and fgets()? Whats the correct way to use fgets() when reading a file?
How can I have a variable field width with printf?
How can I specify a variable width in a scanf() format string?
How can I convert numbers to strings (the opposite of atoi)?
Why should one use strncpy() and not strcpy()? What are the problems with strncpy()?
How does the function strtok() work?
Why do we get the floating point formats not linked error?
Why do some people put void cast before each call to printf()?
What is assert() and when would I use it?
What do memcpy(), memchr(), memcmp(), memset(), strdup(), strncat(),strcmp(), strncmp(), strcpy(), strncpy(), strlen(), strchr(), strchr(),strpbrk(), strspn(), strcspn(), strtok() do?
What does alloca() do?
Can you compare two strings like string1==string2? Why do we need strcmp()?
What does printf() return?
What do setjmp() and longjump() functions do?
Whats the prototype of main()? Can main() return a structure?
Is exit(status) equivalent to returning the same status from main()?
Can main() be called recursively?
How to print the arguments recieved by main()?

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