Defined in header <stdio.h> int fputs( const char *str, FILE *stream ); (until C99) int fputs( const char *restrict str, FILE *restrict stream ); (since C99) Writes given null-terminated character string to the given output stream. Parameters str - null-terminated character string to be written stream - output stream Return value Non-negative integer on success, EOF on failure. Example fputs() with error checking. #include <

Defined in header <stdio.h> (1) ​int scanf( const char *format, ... );​ (until C99) ​int scanf( const char *restrict format, ... );​ (since C99) (2) int fscanf( FILE *stream, const char *format, ... ); (until C99) int fscanf( FILE *restrict stream, const char *restrict format, ... ); (since C99) (3) int sscanf( const char *buffer, const char *format, ... ); (until C99) int sscanf( const char *restrict buff

Defined in header <stdlib.h> void quick_exit( int exit_code ); (since C11) Causes normal program termination to occur without completely cleaning the resources. Functions passed to at_quick_exit are called in reverse order of their registration. After calling the registered functions, calls _Exit(exit_code). Parameters exit_code - exit status of the program Return value (none). Example #include <stdlib.h> #include <stdio.h> void f1() { p

Defined in header <stdlib.h> int at_quick_exit( void (*func)() ); (since C11) Registers the function pointed to by func to be called on quick program termination (via quick_exit). Calling the function from several threads does not induce a data race. The implementation shall support the registration of at least 32 functions. Parameters func - pointer to a function to be called on normal program termination Return value ​0​ if the registration succeeds, nonzero

Usage declaration of an enumeration type

Usage conditionally-supported type specifier for Fortran language linkage. May be used with function declarations and other external declarations to indicate that the calling convention and name mangling is suitable for linking with translation units written in the Fortran programming language.

Defined in header <math.h> #define isgreater(x, y) /* implementation defined */ (since C99) Determines if the floating point number x is greater than the floating-point number (y), without setting floating-point exceptions. Parameters x - floating point value y - floating point value Return value Nonzero integral value if x > y, ​0​ otherwise. Notes The built-in operator> for floating-point numbers may set FE_INVALID if one or both of the argume

Array is a type consisting of a contiguously allocated nonempty sequence of objects with a particular element type. The number of those objects (the array size) never changes during the array lifetime. Syntax In the declaration grammar of an array declaration, the type-specifier sequence designates the element type (which must be a complete object type), and the declarator has the form: [ static(optional) qualifiers(optional) expression(optional) ] (1) [ qualifiers(optional) static(op

Defined in header <<fenv.h>> int feraiseexcept( int excepts ); (since C99) Attempts to raise all floating point exceptions listed in excepts (a bitwise OR of the floating point exception macros). If one of the exceptions is FE_OVERFLOW or FE_UNDERFLOW, this function may additionally raise FE_INEXACT. The order in which the exceptions are raised is unspecified, except that FE_OVERFLOW and FE_UNDERFLOW are always raised before FE_INEXACT. Parameters excepts - bi

Defined in header <string.h> void* memmove( void* dest, const void* src, size_t count ); (1) errno_t memmove_s(void *dest, rsize_t destsz, const void *src, rsize_t count); (2) (since C11) 1) Copies count characters from the object pointed to by src to the object pointed to by dest. Both objects are interpreted as arrays of unsigned char. The objects may overlap: copying takes place as if the characters were copied to a temporary character array and then the character