Explore topic-wise MCQs in Engineering.

This section includes 564 Mcqs, each offering curated multiple-choice questions to sharpen your Engineering knowledge and support exam preparation. Choose a topic below to get started.

451.

Would the following typedef work? typedef #include l;

A. Yes
B. No
Answer» C.
Discussion
452.

Will the program compile successfully? #include<stdio.h> int main() { printf("India" "BIX n"); return 0; }

A. Yes
B. No
Answer» B. No
Discussion
453.

Will the program compile successfully? #include<stdio.h> #define X (4+Y) #define Y (X+3) int main() { printf("%d n", 4*X+2); return 0; }

A. Yes
B. No
Answer» C.
Discussion
454.

What will be the output of the program ? #include<stdio.h> int main() { int i=3, *j, k; j = &i; printf("%d n", i**j*i+*j); return 0; }

A. 30
B. 27
C. 9
D. 3
Answer» B. 27
Discussion
455.

In the following program add a statement in the function fact() such that the factorial gets stored in j. #include<stdio.h> void fact(int*); int main() { int i=5; fact(&i); printf("%d n", i); return 0; } void fact(int *j) { static int s=1; if(*j!=0) { s = s**j; *j = *j-1; fact(j); /* Add a statement here */ } }

A. j=s;
B. *j=s;
C. *j=&s;
D. &j=s;
Answer» C. *j=&s;
Discussion
456.

Will the program compile successfully? #include<stdio.h> int main() { #ifdef NOTE int a; a=10; #else int a; a=20; #endif printf("%d n", a); return 0; }

A. Yes
B. No
Answer» B. No
Discussion
457.

What will be the output of the program ? #include<stdio.h> int main() { static char *s[] = {"black", "white", "pink", "violet"}; char **ptr[] = {s+3, s+2, s+1, s}, ***p; p = ptr; ++p; printf("%s", **p+1); return 0; }

A. ink
B. ack
C. ite
D. let
Answer» B. ack
Discussion
458.

We should not read after a write to a file without an intervening call to fflush(), fseek() or rewind()

A. True
B. False
Answer» B. False
Discussion
459.

If the different command line arguments are supplied at different times would the output of the following program change? #include<stdio.h> int main(int argc, char **argv) { printf("%d n", argv[argc]); return 0; }

A. Yes
B. No
Answer» C.
Discussion
460.

Offset used in fseek() function call can be a negative number.

A. True
B. False
Answer» B. False
Discussion
461.

In a call to printf() function the format specifier %b can be used to print binary equivalent of an integer.

A. True
B. False
Answer» C.
Discussion
462.

What will be the output of the program ? #include<stdio.h> int main() { char str[20] = "Hello"; char *const p=str; *p='M'; printf("%s n", str); return 0; }

A. Mello
B. Hello
C. HMello
D. MHello
Answer» B. Hello
Discussion
463.

What will be the output of the program If the integer is 4bytes long? #include<stdio.h> int main() { int ***r, **q, *p, i=8; p = &i; q = &p; r = &q; printf("%d, %d, %d n", *p, **q, ***r); return 0; }

A. 8, 8, 8
B. 4000, 4002, 4004
C. 4000, 4004, 4008
D. 4000, 4008, 4016
Answer» B. 4000, 4002, 4004
Discussion
464.

In the following program add a statement in the function fun() such that address of a gets stored in j? #include<stdio.h> int main() { int *j; void fun(int**); fun(&j); return 0; } void fun(int **k) { int a=10; /* Add a statement here */ }

A. **k=a;
B. k=&a;
C. *k=&a
D. &k=*a
Answer» D. &k=*a
Discussion
465.

What will be the output of the program ? #include<stdio.h> #include<string.h> int main() { printf("%c n", "abcdefgh"[4]); return 0; }

A. Error
B. d
C. e
D. abcdefgh
Answer» D. abcdefgh
Discussion
466.

What will be the output of the following program in 16 bit platform assuming that 1022 is memory address of the string "Hello1" (in Turbo C under DOS) ? #include<stdio.h> int main() { printf("%u %s n", &"Hello1", &"Hello2"); return 0; }

A. 1022 Hello2
B. Hello1 1022
C. Hello1 Hello2
D. 1022 1022
E. Error
Answer» B. Hello1 1022
Discussion
467.

What will be the output of the program in Turbo C? #include<stdio.h> int main() { char str[10] = "India"; str[6] = "BIX"; printf("%s n", str); return 0; }

A. India BIX
B. BIX
C. India
D. Error
Answer» E.
Discussion
468.

What will be the output of the program ? #include<stdio.h> int main() { char t; char *p1 = "India", *p2; p2=p1; p1 = "BIX"; printf("%s %s n", p1, p2); return 0; }

A. India BIX
B. BIX India
C. India India
D. BIX BIX
Answer» C. India India
Discussion
469.

What will be the output of the program ? #include<stdio.h> int main() { char str1[] = "Hello"; char str2[] = "Hello"; if(str1 == str2) printf("Equal n"); else printf("Unequal n"); return 0; }

A. Equal
B. Unequal
C. Error
D. None of above
Answer» C. Error
Discussion
470.

What will be the output of the program ? #include<stdio.h> int main() { int i; char a[] = " 0"; if(printf("%s", a)) printf("The string is not empty n"); else printf("The string is empty n"); return 0; }

A. The string is not empty
B. The string is empty
C. No output
D. 0
Answer» C. No output
Discussion
471.

What will be the output of the program? #include<stdio.h> #define MIN(x, y) (x<y)? x : y; int main() { int x=3, y=4, z; z = MIN(x+y/2, y-1); if(z > 0) printf("%d n", z); return 0; }

A. 3
B. 4
C. 0
D. No output
Answer» B. 4
Discussion
472.

What will be the output of the program? #include<stdio.h> #define MESS junk int main() { printf("MESS n"); return 0; }

A. junk
B. MESS
C. Error
D. Nothing will print
Answer» C. Error
Discussion
473.

What will be the output of the program? #include<stdio.h> #define MAX(a, b, c) (a>b ? a>c ? a : c: b>c ? b : c) int main() { int x; x = MAX(3+2, 2+7, 3+7); printf("%d n", x); return 0; }

A. 5
B. 9
C. 10
D. 3+7
Answer» D. 3+7
Discussion
474.

What will be the output of the program ? #include<stdio.h> #include<string.h> int main() { char str1[5], str2[5]; int i; gets(str1); gets(str2); i = strcmp(str1, str2); printf("%d n", i); return 0; }

A. Unpredictable integer value
B. 0
C. -1
D. Error
Answer» B. 0
Discussion
475.

What will be the output of the program? #include<stdio.h> #define PRINT(i) printf("%d,",i) int main() { int x=2, y=3, z=4; PRINT(x); PRINT(y); PRINT(z); return 0; }

A. 2, 3, 4,
B. 2, 2, 2,
C. 3, 3, 3,
D. 4, 4, 4,
Answer» B. 2, 2, 2,
Discussion
476.

What will be the output of the program ? #include<stdio.h> int main() { char str[25] = "IndiaBIX"; printf("%s n", &str+2); return 0; }

A. Garbage value
B. Error
C. No output
D. diaBIX
Answer» B. Error
Discussion
477.

What will be the output of the program ? #include<stdio.h> int main() { char str[] = "Nagpur"; str[0]='K'; printf("%s, ", str); str = "Kanpur"; printf("%s", str+1); return 0; }

A. Kagpur, Kanpur
B. Nagpur, Kanpur
C. Kagpur, anpur
D. Error
Answer» E.
Discussion
478.

Can a structure can point to itself?

A. Yes
B. No
Answer» B. No
Discussion
479.

If a char is 1 byte wide, an integer is 2 bytes wide and a long integer is 4 bytes wide then will the following structure always occupy 7 bytes? struct ex { char ch; int i; long int a; };

A. Yes
B. No
Answer» C.
Discussion
480.

What will be the output of the program given below in 16-bit platform ? #include<stdio.h> int main() { enum value{VAL1=0, VAL2, VAL3, VAL4, VAL5} var; printf("%d n", sizeof(var)); return 0; }

A. 1
B. 2
C. 4
D. 10
Answer» C. 4
Discussion
481.

It is not possible to create an array of pointer to structures.

A. True
B. False
Answer» C.
Discussion
482.

What will be the output of the program ? #include<stdio.h> int main() { enum days {MON=-1, TUE, WED=6, THU, FRI, SAT}; printf("%d, %d, %d, %d, %d, %d n", ++MON, TUE, WED, THU, FRI, SAT); return 0; }

A. -1, 0, 1, 2, 3, 4
B. Error
C. 0, 1, 6, 3, 4, 5
D. 0, 0, 6, 7, 8, 9
Answer» C. 0, 1, 6, 3, 4, 5
Discussion
483.

What will be the output of the program ? #include<stdio.h> int main() { int i=4, j=8; printf("%d, %d, %d n", i|j&j|i, i|j&j|i, i^j); return 0; }

A. 12, 12, 12
B. 112, 1, 12
C. 32, 1, 12
D. -64, 1, 12
Answer» B. 112, 1, 12
Discussion
484.

What will be the output of the program in 16-bit platform (under DOS)? #include<stdio.h> int main() { struct node { int data; struct node *link; }; struct node *p, *q; p = (struct node *) malloc(sizeof(struct node)); q = (struct node *) malloc(sizeof(struct node)); printf("%d, %d n", sizeof(p), sizeof(q)); return 0; }

A. 2, 2
B. 8, 8
C. 5, 5
D. 4, 4
Answer» B. 8, 8
Discussion
485.

What will be the output of the program (myprog.c) given below if it is executed from the command line? cmd> myprog one two three /* myprog.c */ #include<stdio.h> #include<stdlib.h> int main(int argc, char **argv) { int i; for(i=1; i<=3; i++) printf("%u n", &argv[i]); return 0; } If the first value printed by the above program is 65517, what will be the rest of output?

A. 65525 65531
B. 65519 65521
C. 65517 65517
D. 65521 65525
Answer» C. 65517 65517
Discussion
486.

What will be the output of the program ? #include<stdio.h> int main() { struct byte { int one:1; }; struct byte var = {1}; printf("%d n", var.one); return 0; }

A. 1
B. -1
C. 0
D. Error
Answer» C. 0
Discussion
487.

Point out the compile time error in the program given below. #include<stdio.h> int main() { int *x; *x=100; return 0; }

A. Error: invalid assignment for x
B. Error: suspicious pointer conversion
C. No error
D. None of above
Answer» D. None of above
Discussion
488.

Point out the error in the program #include<stdio.h> int main() { int a[] = {10, 20, 30, 40, 50}; int j; for(j=0; j<5; j++) { printf("%d n", a); a++; } return 0; }

A. Error: Declaration syntax
B. Error: Expression syntax
C. Error: LValue required
D. Error: Rvalue required
Answer» D. Error: Rvalue required
Discussion
489.

stderr, stdin, stdout are FILE pointers

A. Yes
B. No
Answer» B. No
Discussion
490.

A file written in text mode can be read back in binary mode.

A. Yes
B. No
Answer» C.
Discussion
491.

Is there easy way to print enumeration values symbolically?

A. Yes
B. No
Answer» C.
Discussion
492.

By default structure variable will be of auto storage class

A. Yes
B. No
Answer» B. No
Discussion
493.

Is it necessary that the size of all elements in a union should be same?

A. Yes
B. No
Answer» C.
Discussion
494.

Will the following declaration work? typedef struct s { int a; float b; }s;

A. Yes
B. No
Answer» B. No
Discussion
495.

Are the expression *ptr++ and ++*ptr are same?

A. True
B. False
Answer» C.
Discussion
496.

Will the program compile? #include<stdio.h> int main() { char str[5] = "IndiaBIX"; return 0; }

A. True
B. False
Answer» B. False
Discussion
497.

Are the three declarations char **apple, char *apple[], and char apple[][] same?

A. True
B. False
Answer» C.
Discussion
498.

Will the following program work? #include<stdio.h> int main() { int n=5; printf("n=%*d n", n, n); return 0; }

A. Yes
B. No
Answer» B. No
Discussion
499.

The following program reports an error on compilation. #include<stdio.h> int main() { float i=10, *j; void *k; k=&i; j=k; printf("%f n", *j); return 0; }

A. True
B. False
Answer» C.
Discussion
500.

Is there any difference between the following two statements? char *p=0;char *t=NULL;

A. Yes
B. No
Answer» C.
Discussion