Explore topic-wise MCQs in Engineering.

Which bitwise operator is suitable for turning on a particular bit in a number?

In which numbering system can the binary number 1011011111000101 be easily converted to?

Which bitwise operator is suitable for turning off a particular bit in a number?

Which bitwise operator is suitable for checking whether a particular bit is on or off?

What is the purpose of "rb" in fopen() function used below in the code?

FILE *fp;
fp = fopen("source.txt", "rb");

Out of fgets() and gets() which function is safe to use?

Consider the following program and what will be content of t?

#include<stdio.h> int main()
{ FILE *fp; int t; fp = fopen("DUMMY.C", "w"); t = fileno(fp); printf("%d n", t); return 0;
}

Which of the following function is more appropriate for reading in a multi-word string?

The operator used to get value at address stored in a pointer variable is

What would be the equivalent pointer expression for referring the array element a[i][j][k][l]

Which of the following function is correct that finds the length of a string?

If the two strings are identical, then strcmp() function returns

What will be the output of the program?

#include<stdio.h> int main()
{ const char *s = ""; char str[] = "Hello"; s = str; while(*s) printf("%c", *s++); return 0;
}

Which of the following operations can be performed on the file "NOTES.TXT" using the below code?

FILE *fp;
fp = fopen("NOTES.TXT", "r+");

To print out a and b given below, which of the following printf() statement will you use?

#include<stdio.h> float a=3.14;
double b=3.14;

How will you print n on the screen?

Which of the following function is used to find the first occurrence of a given string in another string?

What is (void*)0?

Can you combine the following two statements into one?

char *p;
p = (char*) malloc(100);

In which header file is the NULL macro defined?

If a variable is a pointer to a structure, then which of the following operator is used to access data members of the structure through the pointer variable?

What will be the output of the program?

#include<stdio.h> int main()
{ int y=128; const int x=y; printf("%d n", x); return 0;
}

Which of the following statements should be used to obtain a remainder after dividing 3.14 by 2.1 ?

What are the types of linkages?

What will be the output of the program in TurboC?

#include<stdio.h>
int fun(int **ptr); int main()
{ int i=10, j=20; const int *ptr = &i; printf(" i = %5X", ptr); printf(" ptr = %d", *ptr); ptr = &j; printf(" j = %5X", ptr); printf(" ptr = %d", *ptr); return 0;
}

Which of the following is the correct order if calling functions in the below code?
a = f1(23, 14) * f2(12/4) + f3();

Which of the following are unary operators in C?

When we mention the prototype of a function?

By default a real number is treated as a

Which of the following is not user defined data type?

struct book { char name[10]; float price; int pages; };

long int l = 2.35;

enum day {Sun, Mon, Tue, Wed};

Is the following statement a declaration or definition?
extern int i;

Identify which of the following are declarations

Which of the following special symbol allowed in a variable name?

How would you round off a value from 1.66 to 2.0?

Which of the following statement obtains the remainder on dividing 5.5 by 1.3 ?

What will you do to treat the constant 3.14 as a float?

We want to round off x, a float, to an int value, The correct way to do is

The binary equivalent of 5.375 is

Can you use the fprintf() to display the output on the screen?

What will the function randomize() do in Turbo C under DOS?

What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile?

#include<stdio.h> #define SWAP(a, b, c)(c t; t=a, a=b, b=t) int main() { int x=10, y=20; SWAP(x, y, int); printf("%d %d n", x, y); return 0; } 

What will happen if in a C program you assign a value to an array element whose subscript exceeds the size of array?

What are the different types of real data type in C ?

What is the similarity between a structure, union and enumeration?

In which stage the following code
#include<stdio.h>
gets replaced by the contents of the file stdio.h

In C, if you pass an array as an argument to a function, what actually gets passed?

What will be the output of the program?

#include<stdio.h>
#include<stdarg.h>
void fun(char *msg, ...); int main()
{ fun("IndiaBIX", 1, 4, 7, 11, 0); return 0;
}
void fun(char *msg, ...)
{ va_list ptr; int num; va_start(ptr, msg); num = va_arg(ptr, int); num = va_arg(ptr, int); printf("%d", num);
}

Which of the following is not logical operator?

In mathematics and computer programming, which is the correct order of mathematical operators ?

What will the function rewind() do?