Programming Lab Quiz

Which is valid C expression?

• int my_num = 100,000;

• int my_num = 100000;

• int my num = 1000;

• int $my_num = 10000;

What is the result of logical or relational expression in C?

• True or False

• 0 or 1

• 0 if an expression is false and any positive number if an expression is true

• None of the mentioned

What is an example of iteration in C?

• for

• while

• do-while

• all of the mentioned

What will be the output of the following C code? #include int main() { int y = 10000; int y = 34; printf("Hello World! %d\n", y); return 0; }

• Compile time error

• Hello World! 34

• Hello World! 1000

• Hello World! followed by a junk value

What will happen if the following C code is executed? #include int main() { int main = 3; printf("%d", main); return 0; }

• It will cause a compile-time error

• It will cause a run-time error

• It will run without any error and prints 3

• It will experience infinite looping

What will be the output of the following C code? #include void main() { int x = 5; if (x < 1); printf("Hello"); }

• Nothing

• Run time error

• Hello

• Varies

What will be the output of the following C code? (Assuming that we have entered the value 1 in the standard input) #include void main() { int ch; printf("enter a value between 1 to 2:"); scanf("%d", &ch); switch (ch) { case 1: printf("1\n"); default: printf("2\n"); } }

• 1

• 2

• 1 2

• Run time error

What will be output of this #include int main() { int x = 1; if (x > 0) printf("inside if\n"); else if (x > 0) printf("inside elseif\n"); }

• inside if

• inside elseif

• compile time error

• none of the above

What will be the output of the following C code? #include int main() { int x = 0; if (x++) printf("true\n"); else if (x == 1) printf("false\n"); }

• true

• false

• compile time error

• undefined behaviour

What will be the output of the following C code? #include int main() { int x = 0; if (x == 0) printf("true, "); else if (x = 10) printf("false, "); printf("%d\n", x); }

• false, 0

• true, 0

• true, 10

• compile time error