1. Which of the following cannot be used as LHS of the expression in for (exp1;exp2; exp3)?
a) variable
b) function
c) typedef
d) macros
2. What will be the output of the following C code?
#include < stdio.h >
int main()
{
short i;
for (i = 1; i >= 0; i++)
printf("%d\n", i);
}
a) The control won’t fall into the for loop
b) Numbers will be displayed until the signed limit of short and throw a runtime error
c) Numbers will be displayed until the signed limit of short and program will successfully terminate
d) This program will get into an infinite loop and keep printing numbers with no errors
3. What will be the output of the following C code?
#include < stdio.h >
void main()
{
int k = 0;
for (k)
printf("Hello");
}
a) Compile time error
b) hello
c) Nothing
d) Varies
4. What will be the output of the following C code?
#include < stdio.h >
void main()
{
int k = 0;
for (k < 3; k++)
printf("Hello");
}
a) Compile time error
b) Hello is printed thrice
c) Nothing
d) Varies
5. What will be the output of the following C code?
#include < stdio.h >
void main()
{
double k = 0;
for (k = 0.0; k < 3.0; k++)
printf("Hello");
}
a) Run time error
b) Hello is printed thrice
c) Hello is printed twice
d) Hello is printed infinitely
6. What will be the output of the following C code?
#include < stdio.h >
void main()
{
double k = 0;
for (k = 0.0; k < 3.0; k++);
printf("%lf", k);
}
a) 2.000000
b) 4.000000
c) 3.000000
d) Run time error
7. What will be the output of the following C code?
#include < stdio.h >
void main()
{
int k;
for (k = -3; k < -5; k++)
printf("Hello");
}
a) Hello
b) Infinite hello
c) Run time error
d) Nothing
8. What will be the output of the following C code?
#include < stdio.h >
int main()
{
int i = 0;
for (; ; ;)
printf("In for loop\n");
printf("After loop\n");
}
a) Compile time error
b) Infinite loop
c) After loop
d) Undefined behaviour
9. What will be the output of the following C code?
#include < stdio.h >
int main()
{
int i = 0;
for (i++; i == 1; i = 2)
printf("In for loop ");
printf("After loop\n");
}
a) In for loop after loop
b) After loop
c) Compile time error
d) Undefined behaviour
10. What will be the output of the following C code?
#include < stdio.h >
int main()
{
int i = 0;
for (foo(); i == 1; i = 2)
printf("In for loop\n");
printf("After loop\n");
}
int foo()
{
return 1;
}
a) After loop
b) In for loop after loop
c) Compile time error
d) Infinite loop