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Remeber: 1 Assignment: you can assign an address to a pionter. Do not dereference an uninitialized pointer..for example, int *pt; *pt = 5.(correct : i 阅读全文
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Remeber : 1 C now has a function-prototyping mechanism that checks whether a function call has the correct number and correct kind of arguments . 2 th 阅读全文
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int function1(int x); int function2(int *ptr); Remeber: 1 Use the first form if the function needs a value for some calculation or action; 2 Use the s 阅读全文
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The #define statement can be used for character and string constants,too . The following example are valid: 阅读全文