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March 19, 2010

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What is hashing in C ?

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Hashing is that some data either has no inherent ordering (such as images) or is expensive to compare (such as images). If the data has no inherent ordering, you can't perform comparison searches.
If the data is expensive to compare, the number of comparisons used even by a binary search might be too many. So instead of looking at the data themselves, you condense (hash) the data to an integer (its hash value) and keep all the data with the same hash value in the same place. This task is carried out by using the hash value as an index into an array.

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index, data, array, compare, C, hashing, inherent ordering, binary search, integer, hash value

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C, C++

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HCL

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348

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when do you use a function pointer as opposed to function call ?

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Asked By: Anonymous |

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you use function ptr when you want to call multiple functions using the ptr in a loop.
like have an array of funtion ptrs, loop through the array and execute the functions.

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Monday, January 21, 2008

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318

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How is structure passing and returning implemented?

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Asked By: tarun |

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structures can be passed by reference.

they can be returned as pointers.

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Saturday, March 15, 2008

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structure, C, passing, returning

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279

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What is pseudo code ?

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Asked By: tarun |

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pseudo code is the code written when converting the algorithm/ flow chart to actual code.
So it is in between the compiled code and flow chart. It is something that is not compiled but can be on
a notepad.

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Saturday, March 15, 2008

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C, pseudo

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143

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what is the difference between method and function ?

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Methods are for objects functions are regular routines

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Thursday, October 16, 2008

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C, include, C++

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207

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write a program to show no is prime or not

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Asked By: anujtripathi |

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Test s for prime or not?

#include<stdio.h>
void main(void)
{
           int no,rem,cnt;
        Printf("enter No");
        scanf("%d",&no);
        cnt=2;
        while(cnt<=no)
       {

              rem=no % cnt;
              if (rem==0)
              {
              printf("No is not prime");
              exit(0);
              }
              cnt++;
        }
          printf("No is Prime");
}

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Thursday, October 16, 2008

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prime or not, c

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