Set 6
Variable And Data Types 6
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Variables And Data Types
Questions based on:
* Data Types in C language
* Format Specifiers
* Tokens
* Identifiers
* Constants
* Keywords
* Operators
* sizeof()
* enum
* typedef
* typecasting, etc.
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Question 1 of 10
1. Question
1 pointsIs it possible to run C program without main() function?
Correct
Hint:
Ideally No but remember pragma directives allows few function to be executed before and after main() functionIncorrect
Hint:
Ideally No but remember pragma directives allows few function to be executed before and after main() function -
Question 2 of 10
2. Question
1 pointsHow many main() function we can have in our project?
Correct
We can’t have more than one main() function in a project.
Incorrect
We can’t have more than one main() function in a project.
-
Question 3 of 10
3. Question
1 pointsWhat is sizeof() in C?
Correct
Anything which has opening and closing braces () is not function
Incorrect
Anything which has opening and closing braces () is not function
-
Question 4 of 10
4. Question
1 pointsIs it true that a function may have several declarations, but only one definition?
Correct
Declaration like int sum(int, int); is allowed number of times but definition int sum(int a, int b) { return a+b; } is allowed only one time. Multiple definitions of the same function is compilation error ( redefinition error )
Incorrect
Declaration like int sum(int, int); is allowed number of times but definition int sum(int a, int b) { return a+b; } is allowed only one time. Multiple definitions of the same function is compilation error ( redefinition error )
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Question 5 of 10
5. Question
1 pointsWhat will be the output?
int main()
{
extern int i;
i = 20;
printf(“%d”, sizeof(i));
return 0;
}Correct
extern int i;
tells the compiler that int i is declared in some other file, in this code we have not included any other header file so it will cause a compilation error.
Incorrect
extern int i;
tells the compiler that int i is declared in some other file, in this code we have not included any other header file so it will cause a compilation error.
-
Question 6 of 10
6. Question
1 pointsIs the following statement a declaration or definition
extern int i;Correct
Incorrect
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Question 7 of 10
7. Question
1 pointsWhich programming language is more faster among these?
Correct
Execution flow ( faster to slower) Binary -> Assembly -> C -> C++ > Java / PHP / VB
Incorrect
Execution flow ( faster to slower) Binary -> Assembly -> C -> C++ > Java / PHP / VB
-
Question 8 of 10
8. Question
1 pointsWhich of the following is executed by Preprocess?
Correct
statements starting with # symbol are always processed by pre-processor
Incorrect
statements starting with # symbol are always processed by pre-processor
-
Question 9 of 10
9. Question
1 pointsint main()
{
int _ = 10;
int __ = 20;
int ___ = _ + __;
printf(“__%d”,___);
return 0;
}Correct
Hint:
multiple underscore ie. _ can be used to create variables.Incorrect
Hint:
multiple underscore ie. _ can be used to create variables. -
Question 10 of 10
10. Question
1 pointsWhat is the output of the following program?
int main()
{
int a = 5;
int b = 10;
int c = a+b;
printf(“%i”,c);
}Correct
Hint:
%i is also used to printf numeric values in C. %d and %i both solve the same purpose.Incorrect
Hint:
%i is also used to printf numeric values in C. %d and %i both solve the same purpose.
