9.how do you write a function that takes a variable number of arguments? What i

9.how do you write a function that takes a variable number
of arguments? What is the prototype of printf () function?
10.How do you access command-line arguments?
11.what does ‘#include<stdio.h>’ mean?
12.what is the difference between #include<> and #include”…”?
13.what are # pragma staments?
14.what is the most appropriate way to write a
multi-statement macro?

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9.how do you write a function that takes a variable number of arguments? What is the prototype of p..

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145
1!=1,4!=24,5!=120
1+24+120=145

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