Online C Programming Test - C Programming Test - Random

What will be the output of the program ?

#include<stdio.h>
#include<string.h>

int main()
{
    char sentence[80];
    int i;
    printf("Enter a line of text\n");
    gets(sentence);
    for(i=strlen(sentence)-1; i >=0; i--)
        putchar(sentence[i]);
    return 0;
}

Declare the following statement?
"A pointer to an array of three chars".

What will be the output of the program ?

#include<stdio.h>
#include<string.h>

int main()
{
    int i, n;
    char *x="Alice";
    n = strlen(x);
    *x = x[n];
    for(i=0; i<=n; i++)
    {
        printf("%s ", x);
        x++;
    }
    printf("\n", x);
    return 0;
}

What will be the output of the program?

#include<stdio.h>
int main()
{
    int i=-3, j=2, k=0, m;
    m = ++i || ++j && ++k;
    printf("%d, %d, %d, %d\n", i, j, k, m);
    return 0;
}

Point out the error in the following program.

#include<stdio.h>
void display(int (*ff)());

int main()
{
    int show();
    int (*f)();
    f = show;
    display(f);
    return 0;
}
void display(int (*ff)())
{
    (*ff)();
}
int show()
{
    printf("IndiaBIX");
}

The binary equivalent of 5.375 is

Bitwise & can be used in conjunction with ~ operator to turn off 1 or more bits in a number.

Is the following declaration acceptable?

typedef long no, *ptrtono;
no n;
ptrtono p;

What will be the output of the program?

#include<stdio.h>
void fun(int*, int*);
int main()
{
    int i=5, j=2;
    fun(&i, &j);
    printf("%d, %d", i, j);
    return 0;
}
void fun(int *i, int *j)
{
    *i = *i**i;
    *j = *j**j;
}

What will be the output of the program?

#include<stdio.h>
int fun(int **ptr);

int main()
{
    int i=10;
    const int *ptr = &i;
    fun(&ptr);
    return 0;
}
int fun(int **ptr)
{
    int j = 223;
    int *temp = &j;
    printf("Before changing ptr = %5x\n", *ptr);
    const *ptr = temp;
    printf("After changing ptr = %5x\n", *ptr);
    return 0;
}

What will be the output of the program?

#include<stdio.h>
int main()
{
    int i = 1;
    switch(i)
    {
        printf("Hello\n");
        case 1:
            printf("Hi\n");
            break;
        case 2:
            printf("\nBye\n");
            break;
    }
    return 0;
}

Which of the following statements correct about the below program?

#include<stdio.h>

int main()
{
    union a
    {
        int i;
        char ch[2];
    };
    union a u1 = {512};
    union a u2 = {0, 2};
    return 0;
}

What will be the output of the program ?

#include<stdio.h>

int main()
{
    union var
    {
        int a, b;
    };
    union var v;
    v.a=10;
    v.b=20;
    printf("%d\n", v.a);
    return 0;
}

What will be the output of the program (sample.c) given below if it is executed from the command line?
cmd> sample Jan Feb Mar

/* sample.c */
#include<stdio.h>
#include<dos.h>

int main(int arc, char *arv[])
{
    int i;
    for(i=1; i<_argc; i++)
        printf("%s ", _argv[i]);
    return 0;
}

What will be the output of the program (sample.c) given below if it is executed from the command line (Turbo C in DOS)?
cmd> sample 1 2 3

/* sample.c */
#include<stdio.h>

int main(int argc, char *argv[])
{
    int j;
    j = argv[1] + argv[2] + argv[3];
    printf("%d", j);
    return 0;
}

Point out the error in the following program.

#include<stdio.h>

int main()
{
    char str[] = "IndiaBIX";
    printf("%.#s %2s", str, str);
    return 0;
}

Point out the error, if any in the while loop.

#include<stdio.h>
int main()
{
    void fun();
    int i = 1;
    while(i <= 5)
    {
        printf("%d\n", i);
        if(i>2)
            goto here;
    }
return 0;
}
void fun()
{
    here:
    printf("It works");
}

What is the output of the program

#include<stdio.h>
int main()
{
    extern int fun(float);
    int a;
    a = fun(3.14);
    printf("%d\n", a);
    return 0;
}
int fun(int aa)
{
	return (int)++aa;
}

FILE is a structure suitably typedef'd in "stdio.h".

In a function two return statements should never occur.