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MCQOPTIONS
This section includes 278 Mcqs, each offering curated multiple-choice questions to sharpen your C Interview knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
What is the output of this C code? #include void main() { char a = 'a'; int x = (a % 10)++; printf("%d\n", x); } |
| A. | 6 |
| B. | Junk value |
| C. | Compile time error |
| D. | 7 |
| Answer» D. 7 | |
| 102. |
What is the output of this C code? #include void main() { int k = 8; int x = 0 == 1 && k++; printf("%d%d\n", x, k); } |
| A. | 0 9 |
| B. | 0 8 |
| C. | 1 8 |
| D. | 1 9 |
| Answer» C. 1 8 | |
| 103. |
What is the output of this C code? #include void main() { int x = 0; if (x = 0) printf("Its zero\n"); else printf("Its not zero\n"); } |
| A. | Its not zero |
| B. | Its zero |
| C. | Run time error |
| D. | None |
| Answer» B. Its zero | |
| 104. |
What is the output of this C code? #include int main() { int a = 10; double b = 5.6; int c; c = a + b; printf("%d", c); } |
| A. | 15 |
| B. | 16 |
| C. | 15.6 |
| D. | 10 |
| Answer» B. 16 | |
| 105. |
What is the output of this C code? #include int main() { int a = 10, b = 5, c = 5; int d; d = a == (b + c); printf("%d", d); } |
| A. | Syntax error |
| B. | 1 |
| C. | 10 |
| D. | 5 |
| Answer» C. 10 | |
| 106. |
What is the output of this C code?#include int main() { signed char chr; chr = 128; printf( |
| A. | 128 |
| B. | -128 |
| C. | Depends on the compiler |
| D. | None of the mentioned |
| Answer» C. Depends on the compiler | |
| 107. |
The format identifier ‘%i’ is also used for _____ data type? |
| A. | double |
| B. | char |
| C. | int |
| D. | float |
| Answer» D. float | |
| 108. |
Which among the following are the fundamental arithmetic operators, ie, performing the desired operation can be done using that operator only? |
| A. | +, – |
| B. | +, -, % |
| C. | +, -, *, / |
| D. | +, -, *, /, % |
| Answer» B. +, -, % | |
| 109. |
Which of the following data type will throw an error on modulus operation(%)? |
| A. | char |
| B. | short |
| C. | int |
| D. | float |
| Answer» E. | |
| 110. |
Which of the following is not an arithmetic operation? |
| A. | a *= 10; |
| B. | a /= 10; |
| C. | a != 10; |
| D. | a %= 10; |
| Answer» D. a %= 10; | |
| 111. |
The precedence of arithmetic operators is (from highest to lowest) |
| A. | %, *, /, +, – |
| B. | %, +, /, *, – |
| C. | +, -, %, *, / |
| D. | %, +, -, *, / |
| Answer» B. %, +, /, *, – | |
| 112. |
What is the output of this C code? #include void main() { int a = 3; int b = ++a + a++ + --a; printf("Value of b is %d", b); } |
| A. | Value of x is 12 |
| B. | Value of x is 13 |
| C. | Value of x is 10 |
| D. | Undefined behaviour |
| Answer» E. | |
| 113. |
What is the output of this C code? #include void main() { int y = 3; int x = 5 % 2 * 3 / 2; printf("Value of x is %d", x); } |
| A. | Value of x is 1 |
| B. | Value of x is 2 |
| C. | Value of x is 3 |
| D. | Compile time error |
| Answer» B. Value of x is 2 | |
| 114. |
What is the output of this C code? #include void main() { int x = 5.3 % 2; printf("Value of x is %d", x); } |
| A. | Value of x is 2.3 |
| B. | Value of x is 1 |
| C. | Value of x is 0.3 |
| D. | Compile time error |
| Answer» E. | |
| 115. |
What is the output of this C code? #include int main() { int i = 5; i = i / 3; printf("%d\n", i); return 0; } |
| A. | Implementation defined |
| B. | 1 |
| C. | 3 |
| D. | Compile time error |
| Answer» C. 3 | |
| 116. |
What is the output of this C code? #include int main() { int i = -3; int k = i % 2; printf("%d\n", k); } |
| A. | Compile time error |
| B. | -1 |
| C. | 1 |
| D. | Implementation defined |
| Answer» C. 1 | |
| 117. |
What is the value of x in this C code? #include void main() { int x = 5 * 9 / 3 + 9; } |
| A. | 3.75 |
| B. | Depends on compiler |
| C. | 24 |
| D. | 3 |
| Answer» D. 3 | |
| 118. |
What is the output of this C code? #include int main() { int i = 3; int l = i / -2; int k = i % -2; printf("%d %d\n", l, k); return 0; } |
| A. | Compile time error |
| B. | -1 1 |
| C. | 1 -1 |
| D. | Implementation defined |
| Answer» C. 1 -1 | |
| 119. |
What is the output of this C code? #include int main() { int i = -5; i = i / 3; printf("%d ", i); return 0; } |
| A. | Implementation defined |
| B. | -3 |
| C. | -1 |
| D. | Compile time error |
| Answer» D. Compile time error | |
| 120. |
Range of unsigned int is? |
| A. | 0 to 65,535 or 0 to 4,294,967,295 |
| B. | 0 to 65,535 |
| C. | 0 to 4,294,967,296 |
| D. | None |
| Answer» B. 0 to 65,535 | |
| 121. |
Data type qualifiers can be classified into? |
| A. | 4 |
| B. | 5 |
| C. | 2 |
| D. | 8 |
| Answer» D. 8 | |
| 122. |
Character literals in C syntax are? |
| A. | A |
| B. | ‘A’ |
| C. | “4” |
| D. | None |
| Answer» C. “4” | |
| 123. |
The C language defines ________ fundamental data types |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» C. 5 | |
| 124. |
What is Enum datatype syntax? |
| A. | Enum[data type]{const1, const2, const3....} |
| B. | Enum{const1, const2,....} |
| C. | Enum[int datatype] |
| D. | None |
| Answer» B. Enum{const1, const2,....} | |
| 125. |
Sort int in C language is? |
| A. | Basic Datatype of C |
| B. | Qualifier |
| C. | All of the mentioned |
| D. | short is the qualifier and int is the basic datatype |
| Answer» E. | |
| 126. |
The Format Identifier %u is used for? |
| A. | Integer |
| B. | Float |
| C. | Decimal |
| D. | Unsigned decimal |
| Answer» E. | |
| 127. |
Size of an int data type is ________ ? |
| A. | 4 Bytes |
| B. | 8 Bytes |
| C. | Depends on Compiler/System |
| D. | Cannot be determined |
| Answer» D. Cannot be determined | |
| 128. |
Which of the following is not a derived data type in c? |
| A. | Function |
| B. | Pointer |
| C. | Enumeration |
| D. | Array |
| Answer» D. Array | |
| 129. |
Predict the output of following C program #include int main() { char a = '12'; printf("%d", a); return 0; } |
| A. | Compiler Error |
| B. | 12 |
| C. | 10 |
| D. | Empty |
| Answer» D. Empty | |
| 130. |
Integral data type is _________? |
| A. | Void |
| B. | Char |
| C. | Float |
| D. | Double |
| Answer» C. Float | |
| 131. |
Predict the output #include int main() { float c = 5.0; printf ("Temperature in Fahrenheit is %.2f", (9/5)*c + 32); return 0; } |
| A. | Temperature in Fahrenheit is 41.00 |
| B. | Temperature in Fahrenheit is 37.00 |
| C. | Temperature in Fahrenheit is 0.00 |
| D. | Compiler Error |
| Answer» C. Temperature in Fahrenheit is 0.00 | |
| 132. |
What will be the output of the following C code? #include int main() { float x = 'a'; printf("%f", x); return 0; } |
| A. | a |
| B. | run time error |
| C. | a.0000000 |
| D. | 97.000000 |
| Answer» E. | |
| 133. |
Which of the following is not a valid declaration in C? |
| A. | short int x; |
| B. | signed short x; |
| C. | short x; |
| D. | All of the above |
| Answer» E. | |
| 134. |
Which of the data types has the size that is variable? |
| A. | int |
| B. | struct |
| C. | float |
| D. | double |
| Answer» C. float | |
| 135. |
What will be printed after execution of the following code?void main(){ int arr[10] = {1,2,3,4,5}; printf("%d", arr[5]); } |
| A. | Garbage Value |
| B. | 5 |
| C. | 6 |
| D. | 0 |
| Answer» E. | |
| 136. |
What will be the output of the following C code? #include int main() { float f1 = 0.1; if (f1 == 0.1) printf("equal\n"); else printf("not equal\n"); } |
| A. | equal |
| B. | not equal |
| C. | output depends on the compiler |
| D. | none of the mentioned |
| Answer» C. output depends on the compiler | |
| 137. |
What will be the output of the following C code on a 32-bit machine? #include int main() { int x = 10000; double y = 56; int *p = &x; double *q = &y; printf("p and q are %d and %d", sizeof(p), sizeof(q)); return 0; } |
| A. | p and q are 4 and 4 |
| B. | p and q are 4 and 8 |
| C. | compiler error |
| D. | p and q are 2 and 8 |
| Answer» B. p and q are 4 and 8 | |
| 138. |
What will be the output of the following C code? #include int main() { float f1 = 0.1; if (f1 == 0.1f) printf("equal\n"); else printf("not equal\n"); } |
| A. | equal |
| B. | not equal |
| C. | output depends on compiler |
| D. | none of the mentioned |
| Answer» B. not equal | |
| 139. |
What will be the output of the program ? #include int main() { int a[5] = {51, 1, 5, 20, 25}; int x, y, z; x = ++a[1]; y = a[1]++; z = a[x++]; printf("%d, %d, %d", x, y, z); return 0; } |
| A. | 2, 3, 20 |
| B. | 2, 1, 5 |
| C. | 1, 2, 5 |
| D. | 3, 2, 5 |
| Answer» E. | |
| 140. |
What will be the output of the program ? #include int main() { printf(2+"C Programming MCQ on Study 2 Online\n"); return 0; } |
| A. | C Programming MCQ on Study 2 Online |
| B. | Programming MCQ on Study 2 Online |
| C. | C Programming MCQ |
| D. | MCQ on Study 2 Online |
| Answer» C. C Programming MCQ | |
| 141. |
In C Programming, If we need to store word "INDIA" then syntax is as below – |
| A. | char name[6] = {'I','N','D','I','A'}; |
| B. | char name[6] = {'I','N','D','I','A','\0'} |
| C. | char name[6] = {"I","N","D","I","A"} |
| D. | name = "INDIA" |
| Answer» C. char name[6] = {"I","N","D","I","A"} | |
| 142. |
What will be the output of the program ? #include #include int main() { char str[] = "Study 2 Online\0 C Language MCQ\0"; printf("%s\n", str); return 0; } |
| A. | Study 2 Online |
| B. | Study 2 Online C Language MCQ |
| C. | Study 2 Online\0 C Language |
| D. | C Language MCQ |
| Answer» B. Study 2 Online C Language MCQ | |
| 143. |
What will be the output of the program ? #include int main() { printf("Study 2 Online", " C Language MCQ\n"); return 0; } |
| A. | Error |
| B. | Study 2 Online |
| C. | Study 2 Online C Language MCQ |
| D. | C Language MCQ |
| Answer» C. Study 2 Online C Language MCQ | |
| 144. |
For which of the following situation should the register storage class be used? |
| A. | For local variable in a function |
| B. | For loop counter |
| C. | For collecting values returned from a function |
| D. | For variables used in a recursive function |
| Answer» C. For collecting values returned from a function | |
| 145. |
What will be the output of the program ? #include int main() { int i; char a[] = "\0"; if(printf("%s", a)) printf("empty string\n"); else printf("not empty string \n"); return 0; } |
| A. | empty string |
| B. | not empty string |
| C. | No output |
| D. | 0 |
| Answer» C. No output | |
| 146. |
What will be the output of the following code? #include< stdio.h> int main() { extern int a; static char j = ‘E’; printf(“%c %d”, ++j, ++a); return 0; } |
| A. | E 2 |
| B. | F 1 |
| C. | F Garbage |
| D. | F 0 |
| Answer» C. F Garbage | |
| 147. |
Where will the space be allocated for an automatic storage class variable? |
| A. | In CPU register |
| B. | In memory as well as in CPU register |
| C. | In memory |
| D. | On disk |
| Answer» D. On disk | |
| 148. |
What will be the output of the following program? #include< stdio.h> int main() { register int I = 2; static char ch = ‘A’; auto float j; int k; k = ++ch && I; k = ++ch; j = i-- + ++k * 2; printf(“%d %f”, k , j); return 0; } |
| A. | B 3 |
| B. | 65 138.000000 |
| C. | 68 138.000000 |
| D. | A 138 |
| Answer» D. A 138 | |
| 149. |
In case of a conflict between the names of a local and global variable what happens? |
| A. | The global variable is given a priority. |
| B. | The local variable is given a priority. |
| C. | Which one will get a priority depends upon which one is defined first |
| D. | The compiler reports an error. |
| Answer» C. Which one will get a priority depends upon which one is defined first | |
| 150. |
Which is not a storage class? |
| A. | Auto |
| B. | Struct |
| C. | Typedef |
| D. | Static |
| Answer» C. Typedef | |