Conditional looping statements

The C code ‘for(;;)’ represents an infinite loop. It can be terminated by ___________
1. break
2. exit(0)
3. abort()
4. terminate
What will be the correct syntax for running two variable for loop simultaneously?
1. for (i = 0; i < n; i++)
  for (j = 0; j < n; j += 5)
2. for (i = 0, j = 0; i < n, j < n; i++, j += 5)
3. for (i = 0; i < n;i++){}
  for (j = 0; j < n;j += 5){}
4. none of the mentioned
Which for loop has range of similar indexes of ‘i’ used in for (i = 0;i < n; i++)?
1. for (i = n; i>0; i–)
2. for (i = n; i >= 0; i–)
3. for (i = n-1; i>0; i–)
4. for (i = n-1; i>-1; i–)
Which of the following cannot be used as LHS of the expression in for (exp1;exp2; exp3)?
1. variable
2. function
3. typedef
4. macros
What will be the output of the following C code?

#include
int main()
{
short i;
for (i = 1; i >= 0; i++)
printf("%d\n", i);

}
1. The control won’t fall into the for loop
2. Numbers will be displayed until the signed limit of short and throw a runtime error
3. Numbers will be displayed until the signed limit of short and program will successfully terminate
4. This program will get into an infinite loop and keep printing numbers with no errors
What will be the output of the following C code?

#include
void main()
{
int k = 0;
for (k)
printf("Hello");
}
1. Compile time error
2. hello
3. Nothing
4. Varies
What will be the output of the following C code?

#include
void main()
{
int k = 0;
for (k < 3; k++)
printf("Hello");
}
1. Compile time error
2. Hello is printed thrice
3. Nothing
4. Varies
What will be the output of the following C code?

#include
void main()
{
double k = 0;
for (k = 0.0; k < 3.0; k++)
printf("Hello");
}
1. Run time error
2. Hello is printed thrice
3. Hello is printed twice
4. Hello is printed infinitely
What will be the output of the following C code?
#include
void main()
{
double k = 0;
for (k = 0.0; k < 3.0; k++);
printf("%lf", k);
}
1. 2.000000
2. 4.000000
3. 3.000000
4. Run time error
What will be the output of the following C code?

#include
void main()
{
int k;
for (k = -3; k < -5; k++)
printf("Hello");
}
1. Hello
2. Infinite hello
3. Run time error
4. Nothing
What will be the output of the following C code?

#include
int main()
{
int i = 0;
for (; ; ;)
printf("In for loop\n");
printf("After loop\n");
}
1. Compile time error
2. Infinite loop
3. After loop
4. Undefined behaviour
What will be the output of the following C code?
#include
int main()
{
int i = 0;
for (i++; i == 1; i = 2)
printf("In for loop ");
printf("After loop\n");
}
1. In for loop after loop
2. After loop
3. Compile time error
4. Undefined behaviour
What will be the output of the following C code?

#include
int main()
{
int i = 0;
for (foo(); i == 1; i = 2)
printf("In for loop\n");
printf("After loop\n");
}
int foo()
{
return 1;
}
1. After loop
2. In for loop after loop
3. Compile time error
4. Infinite loop
What will be the output of the following C code?

#include
int main()
{
int *p = NULL;
for (foo(); p; p = 0)
printf("In for loop\n");
printf("After loop\n");
}
1. In for loop after loop
2. Compile time error
3. Infinite loop
4. Depends on the value of NULL
What will be the output of the following C code?

#include
int main()
{
for (int i = 0;i < 1; i++)
printf("In for loop\n");
}
1. Compile time error
2. In for loop
3. Depends on the standard compiler implements
4. Depends on the compiler
What will be the output of the following C code?
#include
int main()
{
while ()
printf("In while loop ");
printf("After loop\n");
}
1. In while loop after loop
2. After loop
3. Compile time error
4. Infinite loop
What will be the output of the following C code?

#include
int main()
{
do
printf("In while loop ");
while (0);
printf("After loop\n");
}
1. In while loop
2. In while loop
  after loop
3. After loop
4. Infinite loop
What will be the output of the following C code?

#include
int main()
{
int i = 0;
do {
i++;
printf("In while loop\n");
} while (i < 3);
}
1. In while loop
  In while loop
  In while loop
2. In while loop
  In while loop
3. Depends on the compiler
4. Compile time error
How many times i value is checked in the following C code?

#include
int main()
{
int i = 0;
do {
i++;
printf("in while loop\n");
} while (i < 3);
}
1. 2
2. 3
3. 4
4. 1
How many times i value is checked in the following C code?

#include
int main()
{
int i = 0;
while (i < 3)
i++;
printf("In while loop\n");
}
1. 2
2. 3
3. 4
4. 1
What will be the output of the following C code?

#include
void main()
{
int i = 2;
do
{
printf("Hi");
} while (i < 2)
}
1. Compile time error
2. Hi Hi
3. Hi
4. Varies
What will be the output of the following C code?
#include
void main()
{
int i = 0;
while (++i)
{
printf("H");
}
}
1. H
2. H is printed infinite times
3. Compile time error
4. Varies
What will be the output of the following C code?

#include
void main()
{
int i = 0;
do
{
printf("Hello");
} while (i != 0);
}
1. Nothing
2. H is printed infinite times
3. Hello
4. Run time error
What will be the output of the following C code?
#include
void main()
{
char *str = "";
do
{
printf("hello");
} while (str);
}
1. Nothing
2. Run time error
3. Varies
4. Hello is printed infinite times
What will be the output of the following C code?

#include
void main()
{
int i = 0;
while (i < 10)
{
i++;
printf("hi\n");
while (i < 8)
{
i++;
printf("hello\n");
}
}
}
1. Hi is printed 8 times, hello 7 times and then hi 2 times
2. Hi is printed 10 times, hello 7 times
3. Hi is printed once, hello 7 times
4. Hi is printed once, hello 7 times and then hi 2 times
What is an example of iteration in C?
1. for
2. while
3. do-while
4. all of the mentioned
How many times while loop condition is tested in the following C code snippets, if i is initialized to 0 in both the cases?

while (i < n)
i++;
————-
do
i++;
while (i <= n);
1. n, n
2. n, n+1
3. n+1, n
4. n+1, n+1
What will be the output of the following C code?

#include
int main()
{
int i = 0;
while (i = 0)
printf("True\n");
printf("False\n");
}
1. True (infinite time)
2. True (1 time) False
3. False
4. Compiler dependent
What will be the output of the following C code?

#include
int main()
{
int i = 0, j = 0;
while (i < 5, j < 10)
{
i++;
j++;
}
printf("%d, %d\n", i, j);
}
1. 5, 5
2. 5, 10
3. 10, 10
4. Syntax error
Which loop is most suitable to first perform the operation and then test the condition?
1. for loop
2. while loop
3. do-while loop
4. none of the mentioned
Which keyword can be used for coming out of recursion?
1. break
2. return
3. exit
4. both break and return
What will be the output of the following C code?

#include
int main()
{
int a = 0, i = 0, b;
for (i = 0;i < 5; i++)
{
a++;
continue;
}
}
1. 2
2. 3
3. 4
4. 5
What will be the output of the following C code?
#include
int main()
{
int a = 0, i = 0, b;
for (i = 0;i < 5; i++)
{
a++;
if (i == 3)
break;
}
}
1. 1
2. 2
3. 3
4. 4
The keyword ‘break’ cannot be simply used within _________
1. do-while
2. if-else
3. for
4. while
Which keyword is used to come out of a loop only for that iteration?
1. break
2. continue
3. return
4. none of the mentioned

Conditional looping statements

Quiz