19,876 Topics
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| | Hi in my program there is an option to enter a directory as a command line argument. Is there any check I can perform to see whether this directory is relative to the current working directory? For example if we are /home/user and the user wants to input /home/user/folder they …  |
| | so these are my structures: [CODE] struct information { int Id; char name[20]; }[/CODE] that structure I use in my tree structure [CODE] struct node{ information *employee; node *left,*right }[/CODE] and I have a generating function: [CODE] node* generate_tree_from_file(void) { node* tree=malloc(sizeof(node)); employee* emp=malloc(sizeof(employee)); int NoEmployees; FILE *input_file; input_file=fopen("emp.bin","r"); if(input_file) … |
| | Hi there, Kindly see my attached code below. This is already running however, I do have a little problem with the WITHDRAWAL part. For example: My current balance is 500 and I withdraw 501. It will tell me at first that I have insufficient funds and would prompt me to … |
| | Hello I have a following line inside a .txt file This$is$my$Input$203 I would like to know whether is it possible only to store the 203 value in variable using fscanf. So without declaring char arrays to store all those strings. I was thinking of something like this ; [CODE]fscanf(fp,"%*[^$]$%*[^$]$%*[^$]$%*[^$]$%d",&number)[/CODE] But … |
| | I need to know how to work this out, say for example i have a method is C++ that is helloworld(), and i need to call it from a C program. [CODE] // in my C++ program void helloWorld(){ // some code; cout<<"hello world"; some code..... }[/CODE] [CODE]This is my …  |
| | I need a method to invoke the ENTER key in the keyboard. I tried this; yet its for return and not ENTER [CODE]keybd_event(VK_RETURN,0x9c,0 , 0);[/CODE] All i want to do is, to press the keyboard key from the code. How do i do this? |
 | Hello friends.Can anyone help me in this.Here is the code. [CODE]circle(320,240,100); textmode(BW40); cout<<"\n\n\n\n\n\n\n\n\n\n\t\thello";[/CODE] The problem is hello is displayed without circle. |
| | [CODE]#include <stdio.h> #DEFINE suntetagmenes 3 double eswterikoginomeno(double dianusmata[][suntetagmenes]) { int j; double eswteriko=0; for (j=0;j<suntetagmenes;j++) { eswteriko+=dianusmata[0][j]*dianusmata[1][j]; } return(eswteriko); } double e3wterikoginomeno(double dianusmata[][suntetagmenes], int i) { double e3wteriko; if (i==0) { e3wteriko=dianusmata[0][1]*dianusmata[1][2]-dianusmata[0][2]*dianusmata[1][1]; } else if (i==1) { e3wteriko=dianusmata[0][2]*dianusmata[1][0]-dianusmata[0][0]*dianusmata[1][2]; } else { e3wteriko=dianusmata[0][0]*dianusmata[1][1]-dianusmata[0][1]*dianusmata[1][0]; } return(e3wteriko); } int main() { char x='m'; … |
 | Hello guys, I have this function: [CODE=c] void swap(char **a, char **b) { char *tmp=*a; *a=*b; *b=tmp; } int main() { char *str1="aaa"; char *str2="bbb"; swap((char **)&str1, (char**)&str2); return 0; } [/code] The program runs and really swaps the two strings. I don't understand why we send (char**)&str1 and (char**)&str2 … |
| | hello sirs. im trying to turn two 8-bit hex characters that represent the lsb and msb of an integer. below is the code i am using. i am getting output though im not sure of the validity. [CODE] char a = 0x01; //msb char b = 0x3D; //lsb short int …  |
| | hello, please help me with the code for IR CONTROL using ATMEGA128 MICROCONTROLLER IN C LANGUAGE.PLEASE HELP.URGENT. THANKYOU. |
| | Hi all, I'm new to the software package and have written a simple code to turn LED's on/off using a Micro Controller device. When away from the Micro Controller, it would be handy to view the bit orientation (turning on/off) on the computer screen, without the actual device to hand. … |
| | Hey, My codes asks for a number, if the user inputs something else it gives an error message and asked for a number again. If the user inputs a number, it should cout whatever number the user chose. But it doesn't work as intended... I get the error message the … |
 | [CODE] #include<iostream> #include<time.h> #include<conio.h> using namespace std; class adclist { struct list { int data; list* next; }; public: void makelist(); }; void adclist::makelist() { list** table = new list* [10]; for(int j =0; j < 10 ; j++) table[j] = NULL; for ( int m =0; m < 10; … |
| | can some one help me why its not copying the file ? [CODE] if(choice = 2) { puts("please open your archive\n"); scanf("%s",&archive); archive_pointer = fopen( archive, "r+b"); //opens the archive puts("please select the file you want to be copied into your archive\n"); scanf("%s",&original_file); open_pointer = fopen( original_file, "r+b"); //opens the … |
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| | I wrote a C++ program that could sendKey. the code is as Follows; [CODE]s.SendKeys(_T("{Enter}"));s.SendKeys(_T("{Enter}"));[/CODE] this piece if code is inside a function. Now, i need to access this method from a C code. When i added the includes, i get alot of errors. Some says, that you can't access C++ … |
| | Hi,everybody.I wrote a program with mikroC for PIC PRO/2009/V2.50 ,to measure a DC voltage input using 16F877A.But it shows the input dc voltage wrongly and uncorrectly[COLOR="Red"];[ it shows 0.014v instead of correct form; 14v ].[/COLOR] I attached my program and its proteus.would you please tell me what is wrong with … |
| | In my form have a text box...My requirement is... when is type characters in that box... before typing the 3rd character the space should come automatically or programmatically...the sturucture is look like 21 33 44 55..pls help me...Thanks in Advance. |
| | I create a simple data base table using Microfoft SQL Server 2005 and i want to display this simple table as a hole in my form.I use DataSet and DataAdapter to communicate with my SQL data base.i try to pull all the record at data base in to the DataSet …  |
| | I made this code to solve the following problem. On an island chameleons of different color live. Every Monday , the following events occur The number of Black chameleons born is 1000 more than sum of { existing Blue , existing Green and twice the existing White chameleons } The … |
| | Ok, I have this function that was provided by you guys, and it works, but I needed to tweak it a bit, and I can't seem to get it tweaked right. Trying to make it so it takes a 3rd parameter which takes an integer which will determine how many …  |
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 | Hi all, I am currently studying for my degree in software development and have just started using java. In an effort to get ahead of the game I have bought some books on c++ and can happily report I have ubderstood everything up until the part about bitwise opertaors I … |
| | My source code is being altered by itself after executing once or when a copy of the source code file is made. If i try to execute the source code the 2nd time it wont work. There will be some error as there are some unwanted ASCII characters like rectangle,smiley...etc …  |
| | Hi everyone. I have a very simple question about converting strings(in hex) into signed integer number. I use strtol, but it does not work at all. char code[]="FFFFFFFF"; int m; m=strtol(code,NULL,16); printf("%d\n",m); but the result is not -1 How can I manage this in C? Best regards. |
| | #include<stdio.h> #include<conio.h> #define MAX 5 void initialize(int a[], int n); void display (int a[], int n); void input (int a[], int n); int sum (int a[], int n); int largest (int a[], int n); int smallest (int a[], int n); void main (void) { int array [MAX]; int total; initialize(array, … |
 | Hi, I have a little bit of a problem with my client / server apps. I'm trying to build a simple program that resembles a small instant messaging app. So far I've been working on the "user login" and "status change" parts, along with a query to get the status … |
| | [CODE] while (choice != QUIT) { choice = get_menu_choice(); if (choice == 1) { while(1)//while loop that i want to break out of { puts("please give your archive a name and a path:\n"); scanf("%s", &archive_name); if( create_pointer = fopen(archive_name, "r") != NULL) { printf("file already exists\n"); continue; } else { … |
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| | Can anybody temme how to run a pop up window TSR program written in C ..... m unable to create .obj file of .c file.... TC showing ERROR like " TASM.exe not found" and "Linker error"....... |
| | i know that the prototype of putchar() is: int putchar(int ch); eventhough its return type is int why does it print ch in character format instead of printing it as its ascii equivalent?  |
| | Where can we get fine material about OpenCL.....suggest any sites or links.. |
| | i want to know how to check if the file already exists before creating the file? [CODE] puts("please enter a file name to create:\n"); scanf("%s", &file_name); create_pointer = fopen( file_name, "ab"); if( create_pointer == NULL) //create file// else { //file already exist// how would you check if the file already … |
| | I have heard there is a C++ split function, but I have not yet found anything to help me work with what I have. I have the following: [CODE]001E3897 1024 HV regread set [rootPos: 0001CBE7, offset 1862832 ][/CODE] I need to be able to take this and split it into … |
| | can somebody explain me about parameters in initgraph in c++ graphics??? |
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| | hi, i m trying to make something like a login page with C# using VS 2010 and SQL server database. I am using the following code to get the password from the appropriate username but i get an error of Object reference not set to an instance of an object. … |
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| | I need an intersection program for my robot;if there is an intersection of roads,the robot should not stop or take a turn,it should follow the straight path rather than turning left or right or just stop. Please help me,its very urgent............ |
| | i am using avr atmega8 microcontroller....i am getting no idea how to read the value of a pin,I have used a IR sensor in that pin.  |
 | I am struck with some floating-point precision. Please help me to get through this. [CODE]main() { int fact,i=5,div=8; float dec=0.427,temp,sum=0; while(i) { temp=dec*10; printf("%f\t",temp); fact=(int)temp; sum=sum+(fact/(float)div); printf("%f\n",sum); dec=temp-fact; div=div*8; i--; } printf("\n The Decimal part= %f",sum); getch(); } [/CODE] [ICODE]Output 4.270000 0.500000 2.700000 0.531250 6.999998 0.542969 9.999981 0.545166 9.999809 0.545441 … |
| | how can i return cases 1,2,3 and default in to the main function? when i press 1 as key to return to the main function.. the prompt will appear "press any key to continue" how can i return it to the main menu? [CODE]#include <iostream> #include <cstdlib> using namespace std; …  |
| | Hi, I would like to using POSIX API system calls in C, and via command line arguments know how to go about extracting from an archive file.(in Linux). I have done the archiving process it archives the files I enter into the command line , and the last but one … |
| | My original question stated: 1. Write a function named "digits" that takes an integer argument in the range from 1 to 9 , inclusive, and prints the English name for that integer on the computer screen.[B][U] No newline character should be sent to the screen following the digit name.[/U][/B] The … |
| | [CODE]#include <iostream> #include<cstdlib> #include<iomanip> using namespace std; int* userInput(int mat); void multiply(int mat, int* array); void print(int **mult, int **divides, int mat, int row, int col); //Main method, calls IO and handles the case for only 1 matrix. int main() { int mat = 0,i,j; int arrayA[mat][mat]; cout << "Enter … |
| | I'v written the program below, but I'v been told its too "intense" Any ideas on how I can get the same results but with a simpler program? [CODE]#define MAX_SIZE 10000 char buf[MAX_SIZE], name[1000]; int min(int a, int b) { return a<b?a:b; } int main(int argc, char** argv) { FILE *out, …  |
 | Hi there)) I cann't deal with the file opening operation - [CODE]char* fpath = "D:\TC\myprog\readit.txt"; FILE* fp; fp = fopen (fpath, "r"); if (fp != NULL) printf ("\n(!) File opennig error\n"); else printf ("\n(+) File have been opened successfully!\n"); for( i=0;i<=n-1;i++) { a = getc(fp); putchar(a-48); putchar('\n'); }[/CODE] For some … |
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