Printf MCQ 20 : Return printf as Parameter

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Printf Multiple Choice Questions : Return Parameter as Printf

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Question : Guess the output of Program

#include<stdio.h>
#include<conio.h>
int func1()
{
return(printf("Hello"));
}
void main()
{
int i;
i = func1();
printf("%d",i);
}

Options :

1. Compile Error
2. Run Time Error
3. Hello
4. Hello5

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[toggle title="Output"]Hello5[/toggle]

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How and Why ?

1. Printf Returns Length of String Literal i.e String Inside Quotes.

• Example : printf("Hi"); returns 2

• In Above Example , Function First Prints “Hello” and then Returns the Length of “Hello”