MCQs
Total Questions : 8
Question 1.
1.
#include
2.
#include
3.
using namespace std;
4.
float avg( int Count, ... )
5.
{
6.
va_list Numbers;
7.
va_start(Numbers, Count);
8.
int Sum = 0;
9.
for (int i = 0; i < Count; ++i)
10.
Sum += va_arg(Numbers, int);
11.
va_end(Numbers);
12.
return (Sum/Count);
13.
}
14.
int main()
15.
{
16.
float Average = avg(10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
17.
cout
What is the output of this program?
1.
#include
2.
#include
3.
using namespace std;
4.
float avg( int Count, ... )
5.
{
6.
va_list Numbers;
7.
va_start(Numbers, Count);
8.
int Sum = 0;
9.
for (int i = 0; i < Count; ++i)
10.
Sum += va_arg(Numbers, int);
11.
va_end(Numbers);
12.
return (Sum/Count);
13.
}
14.
int main()
15.
{
16.
float Average = avg(10, 0, 1, 2, 3, 4, 5, 6, 7, 8, 9);
17.
cout
Answer: Option A. -> 4
In this program, we are finding the average of first 10 numbers using stdarg header file
Output:
$ g++ std.cpp
$ a.out
4
Answer: Option B. -> fstream.h
In this fstream.h header file is used for accessing the files only.
Answer: Option B. -> iomanip.h
The iomanip header file is used to correct the precision of the values.
Answer: Option C. -> compile time error
In this program,we need to string header file to run this program.
Answer: Option C. -> declarations
In the header file, we define something that to be manipulated in the program.
Answer: Option A. -> iostream is a standard header and iostream.h is a non-standard header.
The iostream.h is used in the older versions of c++ and iostream is evolved from it in the std
namespace.
Answer: Option B. -> h
None.
Answer: Option A. -> include
The include keyword is used to include all the required things to execute the given code
in the program.
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