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Page A9 exit(exitStatus) Parameter: Effect: Function return value: An int expression exitStatus Program execution terminates immediately with all files properly closed None (a void function) By convention, exitStatus is 0 to indicate normal program completion and is nonzero to indicate an abnormal termination. labs(i) Parameter: Function return value: A long expression i A long value that is the absolute value of i rand() Parameter: Function return value: Note: None A random int value in the range 0 through RAND_MAX, a constant defined in stdlib.h (RAND_MAX is usually the same as INT_MAX) See srand below. srand(seed) Parameter: Effect: Function return value: Note: An int expression seed, where seed > 0 Using seed, the random number generator is initialized in preparation for subsequent calls to the rand function. None (a void function) If srand is not called before the first call to rand, a seed value of 1 is assumed. system(str) Parameter: Effect: Function return value: Note: A string (null-terminated char array) str representing an operating system command, exactly as it would be typed by a user on the operating system command line The operating system command represented by str is executed. An int value that is system-dependent Programmers often ignore the function return value, using the syntax of a void function call rather than a value-returning function call. The Header File string.h strcat(toStr, fromStr) Parameters: Strings (null-terminated char arrays) toStr and fromStr, where toStr must be large enough to hold the result
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