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C Language > Learn C Language > What is the most efficient way to store flag values?
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What is the most efficient way to store flag values?

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Professional Tutor with 15 years of experience.

A flag is a value used to make a decision between two or more options in the execution of a program. Efficiency in this case is a tradeoff between size and speed. The most memory-space efficient way to store a flag value is as single bits or groups of bits just large enough to hold all the possible values. The...
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A flag is a value used to make a decision between two or more options in the execution of a program. Efficiency in this case is a tradeoff between size and speed. The most memory-space efficient way to store a flag value is as single bits or groups of bits just large enough to hold all the possible values. The most time-efficient way to store flag values is to keep each in its own integer variable. read less
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Computer Wizard

int fact1_func (int n) { int i, fact = 1; for (i = 1; i <= n; i++) fact *= i; return (fact); } int fact2_func(int n) { int i, fact = 1; for (i = n; i != 0; i--) fact *= i; return (fact); }
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Computer Wizard

Using structure and Unions you can do it
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Professional trainer Mtech from IIIT hyderabad and Previously with reputed university

use the int flag =0 ; and later on inside some while() loop if some condition you got set flag =1 and return
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Questionable: Efficient in speed, store as int, Efficient in memory consumption then use Bit Fields. Team SG-Tech.in
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Computer & Maths Professor

Bit flags, commonly referred to as Bit fields are an efficient way of storing several related boolean values in a single primitive type
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