C Programming (Pre test ET Sec B)

Q 1.What is the output of the following code snippet? #include main() { int const a = 5; a++; printf(“%d”,a); }

• 5
• 6
• Runtime error
• Compile error

Q 2 - What is the output of the following code snippet? #include main() { const int a = 5; a++; printf("%d", a); }

• 5
• 6
• Runtime error
• Compile error

Q 3 - What is the output of the below code snippet? #include main() { int a = 5, b = 3, c = 4; printf("a = %d, b = %d\n", a, b, c); }

• a=5, b=3
• a=5, b=3, c=0
• a=5, b=3, 0
• compile error

Q 4 - Function fopen() with the mode "r+" tries to open the file for __

• reading and writing
• reading and adding new content
• only for reading
• it works only for directories

Q 5 - What is the output of the following program? #include main() { int a[] = {2,1}; printf("%d", *a); }

• 0
• 1
• 2
• Compile error.

Q 6 - What is the output of the following program? #include main() { int a[3] = {2,,1}; printf("%d", a[a[0]]); }

• 0
• 1
• 2
• Compile error

Q 7 - What is the following program doing? #include main() { FILE *stream=fopen("a.txt",'r'); }

• Trying to open “a.txt” in read mode
• Trying to open “a.txt” in write mode.
• “stream” is an invalid identifier
• Compile error

Q 8 - What is the output of the following program? #include main() { float t = 2; switch(t) { case 2: printf("Hi"); default: printf("Hello"); } }

• Hi
• HiHello
• Hello
• Error

Q 9 - The type name/reserved word ‘short’ is ___

• short long
• short char
• short float
• short int

Q 10 - What is the output of the following program? #include void swap(int m, int n) { int x = m; m = n; n = x; } main() { int x=5, y=3; swap(x,y); printf("%d %d", x, y); }

• 3 5
• 5 3
• 5 5
• Compile error