3_sem
Authored by AKSV AKSV
Information Technology (IT)
University
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30 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will be the output of this code? #include <stdio.h> int main() { int i = 5; printf("%d %d %d", i, i++, ++i); return 0; }
Answer explanation
Undefined order of evaluation leads to undefined behavior.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the size of sizeof('A') in a 64-bit GCC compiler?
Answer explanation
Character constants are of type int, hence 4 bytes.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which keyword is used to declare a variable that retains its value across function calls?
Answer explanation
static retains value across function calls.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is returned by fopen() if it fails to open a file?
Answer explanation
fopen returns NULL if it fails.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What will the following code print? #include <stdio.h> int main() { char *p = "Hello"; *p = 'M'; printf("%s", p); }
Answer explanation
Modifying string literal is undefined behavior.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is not a valid storage class in C?
Answer explanation
dynamic is not a C storage class.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the output of: printf("%d", printf("Hi"));
Answer explanation
printf prints 'Hi' and returns 2, so output is 'Hi2'.
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