Output of C++ programs | Set 45
Last Updated :
29 Apr, 2022
Q.1 What Is The Output Of this program?
CPP
#include <iostream>
#define square(x) x* x
#define square1(x) (x) * (x)
using namespace std;
int main()
{
printf ( "%d, " , square(10 + 2));
printf ( "%d" , square1(10 + 2));
return 0;
}
|
Option
a) 50 50 50
b) Three Garbage Value
c) 10 10 10
d) Compile Time Error
Ans: d
Explanation : In this program, b and c are not declared and we can not directly assign the value to them so “Compilation Time” error occurred.
Q.2 What Is The Output Of this program?
CPP
#include <iostream>
using namespace std;
int main()
{
int i;
i = 0x18 + 0110 + 11;
printf ( "p= %d" , i);
return 0;
}
|
Option
a) hx = a
b) hx = 12
c) hx = c
d) hx= 13
Ans: C
Explanation : In this code a double value modulus an integer value is given and further the result is left shifted 2 bits and printed in hexa-decimal form.
Q.3 What Is The Output Of this program?
CPP
#include <iostream>
using namespace std;
int main()
{
char * a = "INFO" ;
a++;
printf ( "%s" , a);
return 0;
}
|
Option
a) 144, 32
b) 32, 144
c) 100, 12
d) 12, 144
Ans: B
Explanation : In this program, #define macro used to replace value and calculated them like this:
10 + 2 * 10 + 2 = 32
or (10+2)*(10+2) = 144
Q.4 What Is The Output Of this program?
Option
a) p= 101
b) p= 107
c) p= 40
d) Error
Ans: B
Explanation : In this program 0x is hexa-decimal notation and 0 is octal, convert these value in decimal and add them.
Q.5 What Is The Output Of this program?
CPP
#include <iostream>
using namespace std;
int main()
{
char * a = "INFO" ;
a++;
printf ( "%s" , a);
return 0;
}
|
Option
a) Error
b) INFO
c) NFO
d) None of these
Ans: C
Explanation : In this program, *a is hard core string that contain a base address of string. When we increment the address, it points to next value of the string.
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