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Bottom of Form, 1. Who is the father of C language?, a) Steve Jobs, b) James Gosling, c) Dennis Ritchie, d) Rasmus Lerdorf, 2. Which of the following is not a valid C variable name?, a) int number;, b) float rate;, c) int variable_count;, d) int $main;, 3. All keywords in C are in ____________, a) LowerCase letters, b) UpperCase letters, c) CamelCase letters, d) None of the mentioned, 4. Which of the following is true for variable names in C?, a) They can contain alphanumeric characters as well as special characters, b) It is not an error to declare a variable to be one of the keywords(like goto, static), c) Variable names cannot start with a digit, d) Variable can be of any length, 5. Which is valid C expression?, a) int my_num = 100,000;, b) int my_num = 100000;, c) int my num = 1000;, d) int $my_num = 10000;, 6. Which of the following cannot be a variable name in C?, a) volatile, b) true, c) friend, d) export, 7. What is short int in C programming?, a) The basic data type of C, b) Qualifier, c) Short is the qualifier and int is the basic data type, d) All of the mentioned, 8. Which of the following declaration is not supported by C language?, a) String str;, b) char *str;, c) float str = 3e2;, d) Both String str; & float str = 3e2;, 9. Which keyword is used to prevent any changes in the variable within a C program?, a) immutable, b) mutable, c) const, d) volatile, 10. What is the result of logical or relational expression in C?, a) True or False, b) 0 or 1, c) 0 if an expression is false and any positive number if an expression is true, d) None of the mentioned, 11. Which of the following typecasting is accepted by C language?, a) Widening conversions, b) Narrowing conversions, c) Widening & Narrowing conversions, d) None of the mentioned, 12. Where in C the order of precedence of operators do not exist?, a) Within conditional statements, if, else, b) Within while, do-while, c) Within a macro definition, d) None of the mentioned, 13. Which of the following is NOT possible with any 2 operators in C?, a) Different precedence, same associativity, b) Different precedence, different associativity, c) Same precedence, different associativity, d) All of the mentioned, 14. What is an example of iteration in C?, a) for, b) while, c) do-while, d) all of the mentioned, 15. Functions can return enumeration constants in C?, a) true, b) false, c) depends on the compiler, d) depends on the standard, 16. Functions in C Language are always _________, a) Internal, b) External, c) Both Internal and External, d) External and Internal are not valid terms for functions, 17. Which of following is not accepted in C?, a) static a = 10; //static as, b) static int func (int); //parameter as static, c) static static int a; //a static variable prefixed with static, d) all of the mentioned, 18. Property which allows to produce different executable for different platforms in C is called?, a) File inclusion, b) Selective inclusion, c) Conditional compilation, d) Recursive macros, 19. What is #include <stdio.h>?, a) Preprocessor directive, b) Inclusion directive, c) File inclusion directive, d) None of the mentioned, 20. C preprocessors can have compiler specific features., a) True, b) False, c) Depends on the standard, d) Depends on the platform, 21. Which of the following are C preprocessors?, a) #ifdef, b) #define, c) #endif, d) all of the mentioned, 22. The C-preprocessors are specified with _________ symbol., a) #, b) $, c) ” ”, d) &, 23. How is search done in #include and #include “somelibrary.h” according to C standard?, a) When former is used, current directory is searched and when latter is used, standard directory is searched, b) When former is used, standard directory is searched and when latter is used, current directory is searched, c) When former is used, search is done in implementation defined manner and when latter is used, current directory is searched, d) For both, search for ‘somelibrary’ is done in implementation-defined places, 24. How many number of pointer (*) does C have against a pointer variable declaration?, a) 7, b) 127, c) 255, d) No limits, 25. Which of the following is not possible statically in C language?, a) Jagged Array, b) Rectangular Array, c) Cuboidal Array, d) Multidimensional Array, 26. Which of the following return-type cannot be used for a function in C?, a) char *, b) struct, c) void, d) none of the mentioned, 27. The standard header _______ is used for variable list arguments (…) in C., a) <stdio.h >, b) <stdlib.h>, c) <math.h>, d) <stdarg.h>, 28. When a C program is started, O.S environment is responsible for opening file and providing pointer for that file?, a) Standard input, b) Standard output, c) Standard error, d) All of the mentioned, 29. In C language, FILE is of which data type?, a) int, b) char *, c) struct, d) None of the mentioned, 30. What is the sizeof(char) in a 32-bit C compiler?, a) 1 bit, b) 2 bits, c) 1 Byte, d) 2 Bytes, 31. Which of the following is not an operator in C?, a) ,, b) sizeof(), c) ~, d) None of the mentioned, 32. scanf() is a predefined function in______header file., a) stdlib. h, b) ctype. h, c) stdio. h, d) stdarg. h, 33. What is meant by ‘a’ in the following C operation?, fp = fopen("Random.txt", "a");, a) Attach, b) Append, c) Apprehend, d) Add, 34. What will be the output of the following C code?, #include <stdio.h>, int main(), {, int y = 10000;, int y = 34;, printf("Hello World! %d\n", y);, return 0;, }, a) Compile time error, b) Hello World! 34, c) Hello World! 1000, d) Hello World! followed by a junk value, 35. What will happen if the following C code is executed?, #include <stdio.h>, int main(), {, int main = 3;, printf("%d", main);, return 0;, }, a) It will cause a compile-time error, b) It will cause a run-time error, c) It will run without any error and prints 3, d) It will experience infinite looping, 36. What will be the output of the following C code?, #include <stdio.h>, int main(), {, signed char chr;, chr = 128;, printf("%d\n", chr);, return 0;, }, a) 128, b) -128, c) Depends on the compiler, d) None of the mentioned, 37. What will be the output of the following C code on a 64 bit machine?, #include <stdio.h>, union Sti, {, int nu;, char m;, };, int main(), {, union Sti s;, printf("%d", sizeof(s));, return 0;, }, a) 8, b) 5, c) 9, d) 4, 38. What will be the output of the following C function?, #include <stdio.h>, enum birds {SPARROW, PEACOCK, PARROT};, enum animals {TIGER = 8, LION, RABBIT, ZEBRA};, int main(), {, enum birds m = TIGER;, int k;, k = m;, printf("%d\n", k);, return 0;, }, a) 0, b) Compile time error, c) 1, d) 8, 39. What will be the output of the following C code?, #include <stdio.h>, int const print(), {, printf("Sanfoundry.com");, return 0;, }, void main(), {, print();, }, a) Error because function name cannot be preceded by const, b) Sanfoundry.com, c) Sanfoundry.com is printed infinite times, d) Blank screen, no output, 40. Will the following C code compile without any error?, #include <stdio.h>, int main(), {, for (int k = 0; k < 10; k++);, return 0;, }, a) Yes, b) No, c) Depends on the C standard implemented by compilers, d) Error, 41. What will be the final value of x in the following C code?, #include <stdio.h>, void main(), {, int x = 5 * 9 / 3 + 9;, }, a) 3.75, b) Depends on compiler, c) 24, d) 3, 42. What will be the output of the following C code? (Initial values: x= 7, y = 8), #include <stdio.h>, void main(), {, float x;, int y;, printf("enter two numbers \n", x);, scanf("%f %f", &x, &y);, printf("%f, %d", x, y);, }, a) 7.000000, 7, b) Run time error, c) 7.000000, junk, d) Varies, 43. What will be the output of the following C code considering the size of a short int is 2, char is 1 and int is 4 bytes?, #include <stdio.h>, int main(), {, short int i = 20;, char c = 97;, printf("%d, %d, %d\n", sizeof(i), sizeof(c), sizeof(c + i));, return 0;, }, 2, 1, 2, b) 2, 1, 1, c) 2, 1, 4, d) 2, 2, 8, 44. What is the difference between the following 2 C codes?, #include <stdio.h> //Program 1, int main(), {, int d, a = 1, b = 2;, d = a++ + ++b;, printf("%d %d %d", d, a, b);, }, #include <stdio.h> //Program 2, int main(), {, int d, a = 1, b = 2;, d = a++ +++b;, printf("%d %d %d", d, a, b);, }, a) No difference as space doesn’t make any difference, values of a, b, d are same in both the case, b) Space does make a difference, values of a, b, d are different, c) Program 1 has syntax error, program 2 is not, d) Program 2 has syntax error, program 1 is not, 45. What will be the output of the following C code snippet?, #include <stdio.h>, void main(), {, 1 < 2 ? return 1: return 2;, }, a) returns 1, b) returns 2, c) Varies, d) Compile time error, 46. What will be the value of the following assignment expression?, (x = foo())!= 1 considering foo() returns 2, a) 2, b) True, c) 1, d) 0, 47. What will be the output of the following C function?, #include <stdio.h>, void reverse(int i);, int main(), {, reverse(1);, }, void reverse(int i), {, if (i > 5), return ;, printf("%d ", i);, return reverse((i++, i));, }, a) 1 2 3 4 5, b) Segmentation fault, c) Compilation error, d) Undefined behaviour, 48. What will be the final values of i and j in the following C code?, #include <stdio.h>, int x = 0;, int main(), {, int i = (f() + g()) | g(); //bitwise or, int j = g() | (f() + g()); //bitwise or, }, int f(), {, if (x == 0), return x + 1;, else, return x - 1;, }, int g(), {, return x++;, }, a) i value is 1 and j value is 1, b) i value is 0 and j value is 0, c) i value is 1 and j value is undefined, d) i and j value are undefined, 49. Comment on the following C statement., n = 1;, printf("%d, %dn", 3*n, n++);, a) Output will be 3, 2, b) Output will be 3, 1, c) Output will be 6, 1, d) Output is compiler dependent, 50. How many times i value is checked in the following C program?, #include <stdio.h>, int main(), {, int i = 0;, while (i < 3), i++;, printf("In while loop\n");, }, 2, b) 3, c) 4, d) 1