What is the use of "#pragma once"? – McqOptions

MCQOPTIONS

1.	What is the use of "#pragma once"?
A.	Used in a header file to avoid its inclusion more than once
B.	Used to avoid multiple declarations of same variable
C.	Used in a c file to include a header file at least once
D.	Used to avoid assertions
Answer» B. Used to avoid multiple declarations of same variable

Discussion

No Comment Found

Related MCQs

What is the output of the following C program? #include #define SQR(x) (x*x) int main() { int a; int b=4; a=SQR(b+2); printf("%dn",a); return 0; }
How will you free the memory allocated by the following program? #include #define CONDITION(x) printf("letsfindcourse"); int main() { CONDITION(0); return 0; }
The translator which performs macro calls expansion is called:
What is the Error of this program? #include #define CONDITION(x) printf("letsfindcourse"); int main() { CONDITION(0); return 0; }
Which statment is true about the given code ? #include enum colors {lets,find,course}; int main() { printf("%d %d %d",course,lets,find); return 0; }
What is the output of this program? #include int main() { printf("%d",30); return 0; }
What is the output of this program? #include #define p 17; int main() { printf("%d",p); return 0; }
What is the output of this program? #include #define clrscr() 17 int main() { clrscr(); printf("%d",clrscr()); return 0; }
What is the output for the following code snippet? #include #define A -B #define B -C #define C 5 int main() { printf("The value of A is %dn", A); return 0; }
What is the output of this program? #include #define i 5 int main() { #define i 10 printf("%d",i); return 0; }