C Interview Questions

The following handles up to 32-bit integer values. Not the prettiest code in the world, but it works pretty well. Sample output: [fbgo448@n9dvap997]~/prototypes/numbers: ./numbers 1 one [fbgo448@n9...

"c #include #include void pw(long,char[]); char *one[]={" "," one"," two"," three"," four"," five"," six"," seven","eight"," Nine"," ten"," eleven"," twelve"," thirteen"," fourteen...

it will be 4;
der is no any option unfortunately;
bcoz a=120 and b=140 but b can,t exceed 127. after 127 it will be -128,-127,-126.......up to -116;
so updated a and b will be 120, -116 respectively;
so final value will be 4:

a

You need to check that temp isnt null after the call to strtok() in the loop. See the attachment for a fix.

Code
temp = strtok(NULL, " ");
 
if (temp != NULL && strstr(temp1,temp) == NULL)

wild pointer is a pointer which has not been initialized i.e point to nothing

A pointer which does not hold any valid address is called wild pointer

cprintf outputs to the console device.
fprintf outputs to a stream specified by the 1st parameter.

printf outputs to the standard output stream (stdout)

fprintf goes to a file handle (FILE*)

sprintf goes to a buffer you allocated. (char*)

The real answer is that any programmer who would write this kind of code should be given the opportunity to work for the competition.

The sequence expression (q=4,r=-12,q) evaluates to 4 (the last element), with the side-effect of assigning r the value -12. So, avg(1,4,-12) = -7/3 = -2.33...

avg(1,-6,-2)/3 =-2.3333

Code
#include<stdio.h>
#include<conio.h>
void main()
{
int pre=0,next=1,sum=0,n;
clrscr();
printf("enter the value of n:");
scanf("%d",&n);
while(pre<=n)
{
printf("the fibonacci series; %d
",pre);
sum=pre+next;
pre=next;
next=sum;
}
getch();
}

limit:5
01123

A) True

We cannot read the data using fread() function that was written in to file using fwrite() function. This is so beacause the file pointer (FILE* fp) that was passed as the argument of the fread() funct...

Check this out:

Code
int a[3][3],b[3][3],c[3][3];
 
        int i,j,k;
        
        printf("enter the elements in A matrix:
");
        for(i=0;i<=2;i++)
        {
                for(j=0;j<=2;j++)
                {
                        scanf("%d",&a[i][j]);
                }
        }
 
        printf("enter b matrix:
");
        for(i=0;i<=2;i++)
        {
                for(j=0;j<=2;j++)
                {
                        scanf("%d",&b[i][j]);
                }
        }
 
        
        for(i=0;i<=2;i++) 
        {                    
        
                printf("
");
                for(j=0;j<=2;j++)
                {
        
                        c[i][j]=0;
                        for(k=0;k<=2;k++)
                        {
                                 c[i][j] = c[i][j]+a[i][k] * b[k][j];
                        }
                }
        }
        printf("multiplication matrix is:
");
        for(i=0;i<=2;i++)
        {
                for(j=0;j<=2;j++)
                {
                        printf("%d      ",c[i][j]);
                }
                printf("
");
        }

Code
 
main()
{
int a[10][10],b[10][10],c[10][10]:
int i,j,k;
printf("enter the elements in A matrix");
for(i=0;i<=5;i++)
    for(j=0;j<+5;j++)
{
scanf("%d",&a[i][j]);
}
printf("enter b matrix");
for(i=0;i<=5;i++)
    for(j=0;j<+5;j++)
{
scanf("%d",&b[i][j]);
 
 
}
c[0][0]=0;
for(i=0;i<=5;i++)
{                    [  this is main logic ]
for(j=0;j<=5;j++)
{
for(k=0;k<=5;k++)
{
c[i][j]=c[i][j]=c[k][j]+a[i][k]*b[k][j];
 
}
}
printf("multiplication matrix is");
for(i=0;i<=5;i++)
for(j=0;j<=5;j++)
printf("%d",c[i][j]):
} 
 

here in printf %c is consider for only a character not for a string so it will print only first letter or character of string i.e a

Answer is a

There are many differences beyond syntax. C compiles to a native binary, whereas Java compiles to a bytecode that is interpreted by a virtual machine (typically). C leaves a lot of details such as t...

Both getch() and getche() are used to read single character there is very little difference -getch() doesnt display output to screen if used without lvalue -getche() display output to screen even ...

The answer is -2.
Expressions are calculated from left to right and so we have:
a/b=1, (a/b)/c=0 (rounding down).
c*d/b is also calculated the same way to give 3.
So -2+3-3 = -2

Thrashing is caused by under allocation of the minimum number of pages required by a process, forcing it to continuously page fault. The system can detect thrashing by evaluating the level of CPU util...

First of all there is a one sentence definition of Page Thrashing (I believe someone posted a similar answer here):Page Thrashing only comes about when you use Virtual Memory which requires an MMU and...

Code
#include<stdio.h>
#include<conio.h>
int main()
{
int r=2,i,a;
for(i=1,a=1;a<10,i<10;a++,i++)
{
printf("%d",(a+pow(r,i));
}
return 0;
}

Return should contain return(0) because return type of main is int.

b) float pointer

b is a plain float.

FLOATPTR a,b; expands to float* a,b;, which is *parsed* as float (*a),b;. The * is bound to the declarator, not the type specifier, so only a is declared as a pointer to float.