What will initialize the list of arguments in stdarg.h header file?
Which header file should you include if you are to develop a function that can accept variable
number of arguments?
What is the output of this program?
1.
#include
2.
#include
3.
using namespace std;
4.
int flue(char c,...);
5.
int main()
6.
{
7.
int x, y;
8.
x = flue('A', 1, 2, 3);
9.
y = flue('1', 1.0,1, '1', 1.0f, 1l);
10.
cout << x << y;
11.
return 0;
12.
}
13.
int flue(char c,...)
14.
{
15.
return c;
16.
}
What is the output of this program?
1.
#include
2.
#include
3.
using namespace std;
4.
void dumplist(int, ...);
5.
int main()
6.
{
7.
dumplist(2, 4, 8);
8.
dumplist(3, 6, 9, 7);
9.
return 0;
10.
}
11.
void dumplist(int n, ...)
12.
{
13.
va_list p;
14.
int i;
15.
va_start(p, n);
16.
while (n-->0) {
17.
i = va_arg(p, int);
18.
cout << i;
19.
}
20.
va_end(p);
21.
}
What is the output of this program?
1.
#include
2.
#include
3.
using namespace std;
4.
int add (int num, ...)
5.
{
6.
int sum = 0;
7.
va_list args;
8.
va_start (args,num);
9.
for (int i = 0; i < num; i++) {
10.
int num = va_arg (args,int);
11.
sum += num;
12.
}
13.
va_end (args);
14.
return sum;
15.
}
16.
int main (void)
17.
{
18.
int total = add(8, 1, 2, -1, 4, 12, -2, 9, 7);
19.
cout << "The result is " << total;
20.
return 0;
21.
}