Online Test

:

 

What is the purpose of fflush() function.


What will be the output of the program in DOS (Compiler - Turbo C)?

#include<stdio.h>
double i;
int main()
{
    (int)(float)(char) i;
    printf("%d", sizeof((int)(float)(char)i));
    return 0;
}

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


What is the output of below c program?

#include<stdio.h>
int main()
{
  displayOut();
  return 0;
}
int displayOut()
{
  printf("Hi from techepi.com\n");
}

Operation “a = a * b + a” can also be written as:


Which of the following statements are true?
    P. Pointer to Array
    Q. Multi-dimensional array


Point out the error in the following program (in Turbo C under DOS).

#include<stdio.h>
union emp
{
    int empno;
    int age;
};
int main()
{
    union emp e = {10, 25};
    printf("%d %d", e.empno, e.age);
    return 0;
}

What will the function rewind() do?


What will be the output of the program?

#include<stdio.h>
#define SQUARE(x) x*x
int main()
{
    float s=10, u=30, t=2, a;
    a = 2*(s-u*t)/SQUARE(t);
    printf("Result = %f", a);
    return 0;
}

What is the output of this C code?

    #include <stdio.h>
    #define a 10
    int main()
    {
        const int a = 5;
        printf("a = %d\n", a);
    }

What will be the output of the program?

#include<stdio.h>
#include<stdlib.h>
int main()
{
    char *i = "55.555";
    int result1 = 10;
    float result2 = 11.111;
    result1 = result1+atoi(i);
    result2 = result2+atof(i);
    printf("%d, %f", result1, result2);
    return 0;
}

What do the following declaration signify?

char *arr[10];

What will be the output of the program?

#include<stdio.h>
int main()
{
    typedef int LONG;
    LONG a=4;
    LONG b=68;
    float c=0;
    c=b;
    b+=a;
    printf("%d,", b);
    printf("%f\n", c);
    return 0;
}

What is the output of this C code?

  #include <stdio.h>
    union p
    {
        int x;
        float y;
    };
    int main()
    {
        union p p, b;
        p.x = 10;
        printf("%f\n", p.y);
    }

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


Declare the following statement?
"A pointer to a function which receives nothing and returns nothing".


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 is the output of the following program?

#include<stdio.h>
void main()
{
        int x=10,y=20;
        x=((x>9) && y=30 ? printf("\nTRUE"): printf("\nFALSE"));
        printf("\ny=%d",y);
}

What is the output of below c program?

#include<stdio.h>
int main()
{
  struct student
  {
    int id;
    char *name;
   };
   struct student *a,b
   a->id=20;
   a->name="TechEpi";
   printf("%d,%s",a->id,a->name);
}

Point out the error in the program?

typedef struct data mystruct;
struct data
{
    int x;
    mystruct *b;
};

Which of the following are incorrect declarations?


What will be the output of the program?

#include<stdio.h>
#define MAN(x, y) ((x)>(y)) ? (x):(y);
int main()
{
    int i=10, j=5, k=0;
    k = MAN(++i, j++);
    printf("%d, %d, %d\n", i, j, k);
    return 0;
}

Point out the error in the program?

struct emp
{
    int ecode;
    struct emp *e;
};

What will be the output of the program?

#include<stdio.h>
int main()
{
    int i;
    i = printf("How r u\n");
    i = printf("%d\n", i);
    printf("%d\n", i);
    return 0;
}

Point out the error in the program?

struct emp
{
    int ecode;
    struct emp e;
};
 

About Us

TechEpi.com is an online learning website.We cover the latest tech news,online tutorials,blog,online test for Aptitude,C,Java,PHP to improve your knowledge.

Newsletter


Follow TechEpi on