C Miscellaneous MCQ

Test your knowledge with important C Miscellaneous MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more C Miscellaneous MCQs at Bissoy

What is the difference between the following 2 C codes? <pre><code class="c-program">#include <stdio.h> //Program 1int main(){ int d, a = 1, b = 2; d = a++ + ++b; printf("%d %d %d", d, a, b);}</code></pre> <pre><code class="c-program">#include <stdio.h> //Program 2int main(){ int d, a = 1, b = 2; d = a++ +++b; printf("%d %d %d", d, a, b);}</code></pre>

ক
No difference as space doesn't make any difference, values of a, b, d are same in both the case

খ
Space does make a difference, values of a, b, d are different

গ
Program 1 has syntax error, program 2 is not

ঘ
Program 2 has syntax error, program 1 is not
A machine in which the least significant byte is stored in the smallest address is . . . . . . . .

ক
Big endian machine

খ
Bi-endian machine

গ
Binary bit machine

ঘ
Little endian machine
What will be the error in the following C code? <pre><code class="c-program">main(){ long float a=-25.373e22; printf("%lf",a);}</code></pre>

ক
Negative number cannot be assigned to float data type

খ
Long and float cannot be used together

গ
Does not result in error

ঘ
Logical error
Functions in C Language are always . . . . . . . .

ক
Internal

খ
External

গ
Both Internal and External

ঘ
External and Internal are not valid terms for functions
The following C code results in an error. State whether this statement is true or false. <pre><code class="c-program">#include <stdio.h>void f(double b) { printf ("%ld\n",b);}int main() { inline f(100.56); return 0;}</code></pre>

ক
True

খ
False
File formats which have . . . . . . . . as a basic unit are independent of endianness.

ক
1 byte

খ
2 bytes

গ
3 bytes

ঘ
4 bytes
Suppose we have: int a=100; (signed by default). If we want to convert this to an unsigned long integer, we can do this by making the following small change:

ক
int a=lu100;

খ
int a= 100ul;

গ
int a=uu100;

ঘ
int a=100uu;
What will be the value of the following assignment expression? <pre><code class="c-program">(x = foo())!= 1 considering foo() returns 2</code></pre>

ক
2

খ
True

গ
1

ঘ
0
What is the output of this C code? <pre><code class="c-program">#include <stdio.h>main(){ if (sizeof(int) > -1) printf("True"); else printf("False");}</code></pre>

ক
True

খ
False
In the absence of a exit condition in a recursive function, the following error is given . . . . . . . .

ক
Compile time error

খ
Run time error

গ
Logical error

ঘ
No error
Determine Output: <pre><code class="c-program">void main(){ char *p; p="%d\n"; p++; p++; printf(p-2, 300);}</code></pre>

ক
%d\n

খ
300

গ
Error

ঘ
None of These
Determine Output: <pre><code class="c-program">#define prod(a,b) a*bvoid main(){ int x=3, y=4; printf("%d", prod(x+2, y-1));}</code></pre>

ক
15

খ
10

গ
12

ঘ
11
Determine Output: <pre><code class="c-program">void main(){ static int i=i++, j=j++, k=k++; printf("%d %d %d", i, j, k);}</code></pre>

ক
1 1 1

খ
0 0 0

গ
garbage values

ঘ
Error
Determine Output: <pre><code class="c-program">void main(){ int i=i++, j=j++, k=k++; printf("%d %d %d", i, j, k);}</code></pre>

ক
1 1 1

খ
0 0 0

গ
garbage values

ঘ
Error
Determine Output: <pre><code class="c-program">void main(){ int i = abc(10); printf("%d", --i);}int abc(int i){ return(i++);}</code></pre>

ক
10

খ
9

গ
11

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ int i=5, j=6, z; printf("%d", i+++j);}</code></pre>

ক
12

খ
13

গ
11

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ char not; not = !2; printf("%d", not);}</code></pre>

ক
2

খ
Garbage Value

গ
0

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ int i = -1; +i; printf("i = %d, +i = %d", i, +i);}</code></pre>

ক
i = -1, +i = 1

খ
i = 1, +i = 1

গ
i = -1, +i = -1

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ int i=-1, j=-1, k=0, l=2, m; m = i++ && j++ && k++ || l++; printf("%d %d %d %d %d", i, j, k, l, m);}</code></pre>

ক
0 0 1 2 0

খ
0 0 1 3 0

গ
0 0 1 3 1

ঘ
0 0 0 2 1
Determine Output: <pre><code class="c-program">void main(){ static int i=5; if(--i){ main(); printf("%d ", i); }}</code></pre>

ক
5 4 3 2 1

খ
0 0 0 0

গ
Infinite Loop

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ int i=0, j=0; if(i && j++) printf("%d..%d", i++, j); printf("%d..%d", i, j);}</code></pre>

ক
0..1

খ
1..0

গ
0..0

ঘ
1..1
Determine output: <pre><code class="c-program">void main(){ extern int i; i=20; printf("%d", sizeof(i));}</code></pre>

ক
20

খ
2

গ
Compiler Error

ঘ
Linker Error
Determine Output: <pre><code class="c-program">void main(){ int i=0; for(;i++;printf("%d", i)); printf("%d", i);}</code></pre>

ক
1

খ
11

গ
12

ঘ
Error
Determine Output: <pre><code class="c-program">void main(){ int i; printf("%d", scanf("%d", &i)); // value 10 is given as input here}</code></pre>

ক
10

খ
1

গ
Garbage Value

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ int i=1, j=2; switch(i) { case 1: printf("GOOD"); break; case j: printf("BAD"); break; }}</code></pre>

ক
GOOD BAD

খ
GOOD

গ
Compiler Error

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ int i=1; while(i<=5) { printf("%d", i); if(i>2) goto here; i++; }}fun(){ here: printf("PP");}</code></pre>

ক
12PP

খ
12PP345

গ
Compiler Error

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ char *p; p="Hello"; printf("%c", *&*p);}</code></pre>

ক
Hello

খ
H

গ
Some Address will be printed

ঘ
None of These
Determine Output: <pre><code class="c-program">void main(){ char far *farther, *farthest; printf("%d..%d", sizeof(farther), sizeof(farthest));}</code></pre>

ক
4..2

খ
2..2

গ
4..4

ঘ
2..4
Determine Output: <pre><code class="c-program">void main(){ printf("%p", main);}</code></pre>

ক
Error

খ
make an infinite loop

গ
Some address will be printed

ঘ
None of These
Determine Output: <pre><code class="c-program">#include<stdio.h>#define a 10void main(){ #define a 50 printf("%d", a);}</code></pre>

ক
50

খ
10

গ
Compiler Error

ঘ
None of These

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