Lowyat.NET: Latest topics by theanser

Blue Screen Help

theanser — Sat, 11 Jun 2011 18:32:18 +0800

Recently my laptop keep on crash with BSOD everytime I turned on my laptop after shutdown and normally during halfway of my usage.

How can I check whether which drivers or devices are causing the crashing?

Below is the Bluescreen screenshot:

Thank you.

Rapidshare reseller?

theanser — Mon, 12 Oct 2009 08:27:03 +0800

Any good promotions of online rapidshare reseller ?

Itunes Problem cant convert wma

theanser — Sun, 08 Jun 2008 10:03:09 +0800

Hi,

My itunes cant convert wma files automatically in windows vista
Any ideA?

thanks

Vista fail to install sd memory card driver

theanser — Thu, 06 Dec 2007 09:14:22 +0800

Hi all,

I cannot install the driver for my sd memory card...i did a search directly into the windows system 32 folder....it installed but with error.... i encountered similar problem with usb but managed to fix it...however i fail to do so for my sd memory card...any idea?

Why there is a looping?

theanser — Mon, 26 Nov 2007 23:44:11 +0800

#include <stdio.h>

#define F( x) (x* x)

int foo(int *x);

int main()
{
int a=3, b;
b= F(foo(&a));
printf("%i\n", a);

return 0;

}

int foo(int *x)
{
*x += 1;
return *x;
}

The value of a is 5
i run the program the a is being loopd twice from 3 to 4 to 5
then b = 4*5 ....any idea? why there is a looping?

matrix multiplication

theanser — Sat, 17 Nov 2007 21:37:43 +0800

Hi this is my code for a 3X4 matrix multiplying a 4X1 matrix...however i get output of zero...any idea?

#include <stdio.h>

int main(void)
{
int stock[3][4]={{10,13,14,23},{21,24,18,5},{9,14,12,4}};

double cost[4] = {35.45,99.99,210.50,145.00};
double value[3];
int i;

void matrix_vector (int [][4],double [],double []);

matrix_vector (stock,cost,value);

for (i=0;i<3;i++)
{
int counter=1;
printf("The cost for item %d is %.3lf\n",value[i]);
counter++;
}

return 0;

}

void matrix_vector(int stock_p [][4], double cost_p[],double value_p[])
{
int row,col;
for (row=0;row<3;row++)
for (col=0;col<4;col++)
value_p[row]= (stock_p[row][col])*(cost_p[col]);
}

[addedon]November 17, 2007, 9:53 pm[/addedon]i found my error thx:)

Hexadecimal

theanser — Thu, 15 Nov 2007 16:23:34 +0800

How do we interprets the following hexadecimal as in how to get their value

1x12=12
0x12=18
0x2D = 45

thanks

logical and or question

theanser — Thu, 15 Nov 2007 10:49:08 +0800

int y =5,z=0,t=-4;

!(4+5*y>=z-4)&&(z-2) this statement gives and output of 0

(4+5*y>=z-4) this will produce 0 then !0= 1

1 && -2 = 1 is it correct since -2 is non zero value is considered as true?

C fscanf

theanser — Thu, 08 Nov 2007 00:17:00 +0800

Hi ,

THis is the original code and the file attached is my modified code. I am suppose to change the original code so that it will scan data from the Handson11_2.txt and not by user input. However i cant get the desired results...

Thanks.

/*****************************************************************/
/* Hands-on 11: Exercise 3 */
/* This program is written with two programmer-defined functions */
/* function 1: prompts user to enter twenty */
/* employees' salaries and groups the number of */
/* employess under each category as follows: */
/* Cat 1: Above $5,000 */
/* Cat 2: Between $3,000 - $5,000 */
/* Cat 3: Between $1,000 - $3,000 */
/* Cat 4: Below $1,000 */
/* */
/* function 2: displays the results */

#include <stdio.h>

int main (void)
{
int cat1=0, cat2=0, cat3=0, cat4=0;

/*--------------Function prototype-----------------------------*/
void get_salary ( int* cat1p, int* cat2p, int* cat3p, int* cat4p);
void print_cat ( int, int, int, int);

/*-------------Invoking functions-------------------------------*/
get_salary (&cat1, &cat2, &cat3, &cat4);
print_cat (cat1, cat2, cat3, cat4);

return 0;
}

void get_salary ( int *cat1p, int *cat2p, int *cat3p, int *cat4p)
{
double salary=0;
int emp_no=1;

do{
printf("Enter employee %d salary> ", emp_no);
scanf ("%lf", &salary);

if (salary <=0)
printf("Please enter +ve value!\n");
else
{
if (salary >5000)
(*cat1p)++;
else if (salary > 3000 && salary < 5000)
(*cat2p)++;
else if (salary > 1000 && salary < 3000)
(*cat3p)++;
else
(*cat4p)++;
emp_no++;
}
} while (emp_no <= 20);

}

void print_cat (int cat1, int cat2, int cat3, int cat4)
{
printf ("\n\nThe salary structure based on your input is:\n");
printf ("Above $5,000 ------------ %2d\n", cat1);
printf ("$3,000-$5,000 ----------- %2d\n", cat2);
printf ("$1,000-$3,000 ----------- %2d\n", cat3);
printf ("Below $1,000 ----------- %2d\n", cat4);
}

Global to local variables

theanser — Thu, 18 Oct 2007 09:31:52 +0800

Hi all, I'm having this problem here when i change the global to local variables the output isnt random anymore but producing the same number.....any idea how to change the variables?

thanks alot.

/****************************************************************/
/* Program Handson9_exe4.C */
/* This program declares a and b as global variables */
/* Re-write the program by shifting variables a and */
/* b to the function main(). Make necessary changes so that the */
/* program will produce the same output as the original version */
/****************************************************************/

#include <stdio.h>
#include <stdlib.h> /* for rand() and srand() functions */
#include <time.h> /* for time() function*/
#include <ctype.h>

time_t t; /* this is declared for generating random number */
int a; /* global variable */
char b; /* global variable */

int main(void)
{
/* The program calls the function gennum() to generate a */
/* number. If the number is greater than 16383, it is */
/* considered as a Big number. Otherwise, it is considered */
/* as a small number*/

void gennum(void);
char guess;

srand((unsigned) time(&t)); /* srand() is to set a seed number*/

do{
printf ("Hi\7, guess for Big or Small (B or S) =>");
guess = toupper ( getchar() );

gennum();

if (!( guess == 'S' || guess =='B'))
return 0;
else if( b == guess)
printf ("Random number is %d, You win!\n", a);
else
printf ("Random number is %d, Sorry, you lose!\n", a);
fflush(stdin);
}while ( guess == 'B' || guess == 'S');

return 0;
}

/*-------------Definition of the function gennum()-------------*/
void gennum(void)
{
a = rand(); /* rand() is a standard library function */
if ( a > 16383)
b = 'B';
else
b = 'S';
}

C syntax

theanser — Thu, 11 Oct 2007 16:36:52 +0800

printf ("Hi\7, guess for Big or Small (B or S) =>");

what does the \7 represents?

Thanks.

Newton Raphson in C

theanser — Thu, 11 Oct 2007 00:14:37 +0800

Hey...i should get an output as below

Solving the following Cubic Equation:
+1x^3 -6x^2 +11x -6 = 0
where x0 = 2.600000
One solution for x = 3.000000

Solving the following Cubic Equation:
+2x^3 -6x^2 +12x -7 = 0
where x0 = -3.700000
One solution for x = 0.834835

Solving the following Cubic Equation:
-3x^3 +0x^2 +5x +0 = 0
where x0 = -2.000000
One solution for x = -1.290994

i attached my code and the data file (cubic1.txt) together

i looped till the 2nd result...and get floating point overflow...any idea how to solve it?

Thanks

Code:

C Increment

theanser — Fri, 05 Oct 2007 20:50:52 +0800

usually we increment as follows : i++ or ++i

issit error if we use ++ (a+b)?

if yes why issit so?

Thanks

Compilation Error...why?

theanser — Fri, 05 Oct 2007 12:34:15 +0800

#include <stdio.h>
int main(void)
{

int i =15, j=0;
if (i>20)
++j;
j+=2;
else
j+=4;
printf("%i\n", j);
return 0;

}

the reason given is misplaced else in main function..why is it so?
Thanks

C HELP

theanser — Fri, 05 Oct 2007 01:26:12 +0800

f int a =5, b=5
int sum = 0
sum = a++>b++?b++:a+b%a

the answer is sum=6 b= 6

why b++ is being executed....
shud a and b be incremented first then 6 > 6 is false.... and a+b%a executed instead?

Greatest Common Divisor

theanser — Fri, 05 Oct 2007 00:24:25 +0800

#include <stdio.h>

int main(void)
{
/*-------------------Declaration--------------------------------*/
int x,y,a,gcd;

/*-----------------Block 1: Read data input---------------------*/
printf("Enter the first integer: ");
scanf("%d",&x);
printf("Enter the second integer: ");
scanf("%d",&y);

if (x<y)
{
a = x;
x = y;
y = a;
}

gcd = x%y;
if (gcd == 0)
gcd = y;

printf("The greatest common divisor for the inputs is %d\n",gcd);

return 0;

}

this is my code.... it works for small value but if i key in
Enter the first integer: 461952
Enter the second integer: 116298
The greatest common divisor for the inputs is 18
i couldnt get 18.....any idea?

Thanks

HOw to make this effect

theanser — Wed, 03 Oct 2007 12:58:06 +0800

How to i make this effect using photoshop?

Thanks

C assignment

theanser — Thu, 20 Sep 2007 10:22:41 +0800

Write a program that creates the following pattern
given input height(no of rows) and width (print character per line) which is to be inputed by us.

Enter height and width : 7 12

output:

============
* *
* *
* *
* *
* *
============

how do i make the middle part where the blank spaces are according to the width i entered.....

thanks...

how to find factorial of positive integers

theanser — Wed, 19 Sep 2007 21:24:04 +0800

factorial of n = n(n-1)(n-2)................

how can i write a source code using either for while or do while...thx

[addedon]September 19, 2007, 9:41 pm[/addedon]Nvm solved:D

User Account Control

theanser — Mon, 17 Sep 2007 07:23:42 +0800

Is it advisable to turn off the User Account Control?