How are portions of a program disabled in demo versions?

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for example user gives input as " 20 or 20.0 or rs 20.0 or 20.00 or rs20 and so .. on " and the output should be stored as " rs.20.00 " in a variable

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#define min((a),(b)) ((a)<(b))?(a):(b) main() { int i=0,a[20],*ptr; ptr=a; while(min(ptr++,&a[9])<&a[8]) i=i+1; printf("i=%d\n",i);}

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What would happen to X in this expression: X += 15; (assuming the value of X is 5)

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difference between spiral and waterfall model

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What is a double c?

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Can you tell me how to check whether a linked list is circular?

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Do variables need to be initialized?

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What is #define in c?

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What is the use of ?: Operator?

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what r callback function?

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Why does the call char scanf work?

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