Introduction
- Which header file is used to pass unknown number of arguments to function?
-
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NA
Correct Option: A
Because the cstdarg defines this header file to process the unknown number of arguments.
- How can you access the arguments that are manipulated in the function?
-
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NA
Correct Option: B
va_list
- What is the output of this program?
#include
#include
using namespace std;
float avg( int Count, ... )
{
va_list num;
va_start(num, Count);
int Sum = 0;
for (int i = 0; i < Count; ++i )
Sum += va_arg(num, int);
va_end(num);
return (Sum/Count);
}
int main()
{
float AVG = avg(5, 0, 1, 2, 3, 4);
cout << "Average of first 5 whole numbers : " << AVG;
return 0;
}
-
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NA
Correct Option: A
We are just calculating the average of these numbers using cstdarg.
- What is the maximum number of arguments or parameters that can be present in one function call?
-
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NA
Correct Option: D
256
- What is the output of this program?
#include
#include
using namespace std;
int Addition(int number, ...)
{
int sum = 0;
va_list args;
va_start (args,number);
for (int i = 0; i < number; i++)
{
int number = va_arg (args,int);
sum += number;
}
va_end (args);
return sum;
}
int main (void)
{
int Result = Addition(1, 10, 9, -1, 13, 23, -2, 9, 17);
cout << "The result is " << Result;
return 0;
}
-
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NA
Correct Option: C
We are adding these numbers by using for statement and stdarg.
