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c questions
« on: October 23, 2006, 08:53:34 AM »



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 What is the diff b/w #define and a constant? 2. Following program: int main(){ const int i =0; int *p=&i; (*p)++; printf("%d", i); return 0;}If a constant variable can be changed as above, then wht is the use of constant qualifier?

1. #define is a macro processor that is enables us to substitute a value when expression occurse here we need not to define type of the variable, but constant never change in its value in the execution time and here we must be define type of the variable


2. direct value doesnt change

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