1. A function and compatible string function that reads the next character from the keyboard buffer. 2. A string function which returns the left num characters of the string. 3. A string function which returns num characters of the string starting from character startposn. 4. A string function which returns the right num characters of the string. 5. A string function which returns the string form of the numeric argument as it would have been printed. |
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共 5 句