[c] Forum Topics

Hello DaniWeb! I've found your website very useful for previous problems in my course, but this time I've come across something I just can't figure out. I'm attempting to create a program thats instructions are defined in the code. I've used a previous post as a guideline, and it was …

I need to create a rectangle using for loop and a nested for loop So far the code I've got is: [code]#include<iostream> using namespace std; int main() { int row, i, width, spaces; cout <<"Enter the number of rows: "; cin >> row; cout <<"Enter the rectangle width: "; cin …

[CODE]// Randam Guessing Game #include <iostream> #define NEWLINE "\n\n\n" #include <cstdlib> // need to use rand() function #include <ctime> using namespace std; /*void Start(); void GetResult(); void HighScore(); int a, b, chance, maxrand; char difficultychoice, menuchoice, diffchoice; void Start() { a = 0; b = 0; chance = 0; maxrand …

Hi i got this progamm working fine it is supposed to read a comma delimited text file store as an array and the output a formatted version The problem is its outputting something really weird I dont know why. [B]The text file it is supposed to read[/B] [code=text]Darwin,3,33 Darwin,1,11 Darwin,6,66 …

I am quite desperate about a random crash. The memory could not be "read" error. I would be very happy for any help. Thank you. [CODE]HRESULT CSceneNode::UpdateAll() { D3DXMATRIX backup_local_tm = ei.world_tm; Update(); SceneNodeIterator begin=FirstChild(); SceneNodeIterator end=LastChild(); for (;begin!=end;begin++) { (*begin)->UpdateAll(); // Here is the random Crash !!! } ei.world_tm …

Hello, i have written a code in 'C' using visual C++, and i was able to create a DLL out of it. Now i need to access a method of this DLL, from my C# Main() method. How do i do this? The steps that i followed so far; 1.) …

Hey guys, I am interested into making a 3D tic tac toe game, but right now I am stuck. I created a 3D string... like board[3][3][3]. and each time the user type in numbers between 0 to 2...and the computer does the same too. I played a few 3dTTT game …

I am new to C, hope someone could help me here. I need to implement a keystroke, for example, i need to programatically implement the 'return key'. As in if someone is pressing the 'return key' from the keyboard. but here, the user will not even touch the keyboard. the …

Hi there, I'm working on a map for a class assignment and running into trouble. I've tried looking around the web but couldn't find anything that helped. I know how insertion works on a basic level when returning a node pointer but think i'm missing some key ideas when using …

Hi to all. It's my first post here. I want to ask about 2D Gabor filter implementation. I have some code but it is not working. So let me present my work first: [code=c]signed int sumX, sumY; long int SUM = 0; int I = 0, J = 0; double …

Hello all, I have been working on a card game for the last month or so and sofar have created the basics ie. cards, deck... The language is ANSI-C and is created in programmers notepad with devkitpro and MLlib. Everything is working greate so far as in I can shuffle …

The user enters the following : " x+sin(x)-pow(x,2)+5log(x)" How can I make parsing for a statement like that .

Hi, I am trying to make a program which reads 6 integers , insert into a file numbers1.txt then copy numbers1.txt content to numbers2.txt and finally print numbers2. The problem I have is that when I am trying to copy the file to another the system crashes. My code is …

Is there a reliable method to extract the quantized DCT coefficients of a jpeg image? I can see that there is the jpeglib for manipulation of jpegs but I am wondering if someone has already used it and does the job I want to do. To extract the quantized DCT …

Greetings, I've got a working flex/bison parser that I would like to run from an exe file. However, I can't find the knowledge to achieve that. Do I need to create a C file, with an exec function to call the files? If so, what files do I call in …

Im trying to implement a btree. I don't have any error in compiling, but when I run my code I have some weird runtime error. It says something like: MALLOC c:3096: sYsmalloc: Assertion `(old_top == (((mbinptr) (((char *) &((av)->bins[((1) - 1) * 2])) - __builtin_offsetof (struct malloc_chunk, fd)))) && old_size …

Hi all, I am new in C programming, currently learning about linked list. I know that there is a lot of examples about linked list, but I decided to write my own code, to make me more understand. I managed to build a linked list, insert a new node after …

hi can someone give this a quick look over and tell me where im going wrong [CODE]#include<stdio.h> #include<stdlib.h> #include<string.h> #include<ctype.h> void main() { struct Rainfall{ char city[20]; int month; int rainfall; }; Rainfall Rainfallarray[18]; int count=0; FILE * readfile; readfile=fopen("CityRain.txt","r"); if(readfile==NULL) { printf("CityRain.txt failed to open."); exit(1); } printf("CityRain.txt Opened\n"); …

HI, I am looking for faster input and output method for the C other than just normal scanf and printf modules. Please elaborate by simple example. thanks :)

i have written code to move a dot from on end of the lcd screen to the other end. [CODE] /*move dot across the creen with pixel increments of 10*/ for(x=10;x<120;x+=20) { Glcd_Dot(x,y,0); Glcd_Dot(x,y,1); Glcd_Fill(0); delay_ms(100); } [/CODE] i have seen examples in C, but this is on a 128x64 …

i want to make rot13 encryption this program convert ascii code from a caracter, and work only with uppercase character (65-90) please help me [CODE]#include <stdio.h> #include <stdlib.h> #include <string.h> void rot13(const char *input); int main(void) { char *input; printf("Enter string (max. 255 characters) : "); gets(input); printf("\nConvert result %s …

Maple printf using the same format system as C %g %g puts two numbers but lot of spaces are between them it is possible to eliminate the spaces? %-g is not good, why?

Your program will have a 3x3 array. The user will input the sum of each row and each column. Then the user will input 3 values and store them anywhere, or any location or index, temporarily in the array. Your program will supply the remaining six (6) values and determine …

so I am in the process of creating a lc-3 compiler that is written in C and I am stuck on how to convert the BR command into C language, the assignment asks that i get a file and then spit it out in zeros and ones , but with …

Hi Say I want to write a header file as an exercise. It will contain a bunch of functions and some constants. Q1. I noticed that the standard header files only contain the function prototypes. a> Where are the actual functions? b> How do I write a header file such …

what is the program of do while that ... you can type any number but when u type zero it will stop the program? thanks for the help peace!

[CODE]#include <stdio.h> void getInput(); void calculate(int num1, int num2, int num3, float num4); void printTable(int num1, int num2, int num3, float num4,int calc1, int calc2, int calc3, int calc4, double calc5, double calc6, float calc7, float calc8); int main (void) { int num1, num2, num3; float num4; int calc1, calc2, …

Hello, I'm attempting to learn C through the K&R book and am having some trouble with Exercise 1-13 at the moment. I'm just attempting to do a simple horizontal graph and can't figure out why this isn't working correctly. It seems to be ignoring my first "if" statement and just …

help!.... can you give me a statement of looping that use for loop, while, and do while loop at the same time... and if you can answer the statement it will be more welcome.. thank u ... peace!

I want to get some direction which will help me solve insertion sort problem

[CODE]#include"stdio.h" #include"conio.h" #include"alloc.h" struct node { int age; char name[25]; struct node * next; }; void add_end(struct node **q); void display(struct node *); void main() { struct node *p; p=NULL; add_end(&p); //display(p); getch(); return; } add_end(struct node **q) { struct node *temp,*r; temp=*q; if(*q==NULL) { temp=(struct node *)malloc(sizeof(struct node)); printf("\nEnter …

I have the following code. It's a memcmp implementation for the Renesas R5F Embedded Chip family and I'm trying to test it. [code] #include <stdio.h> #include <time.h> #include <stdlib.h> #include <math.h> #include <stdbool.h> #include <stdlib.h> #include <assert.h> typedef char SInt8; typedef unsigned char UInt8; SInt8 one_net_memcmp(const void *vp1, const void …

[code] #include <stdio.h> #if 1 //! Set Pin string const char* const ONCLI_SET_PIN_CMD_STR = "set pin"; #endif const char* const SINGLE_APP_STRINGS[] = { ONCLI_SET_PIN_CMD_STR }; int main() { printf("%s\n", SINGLE_APP_STRINGS[0]); getchar(); // pause return 0; } [/code] Line 12 Error message... [code=text] 12|error: initializer element is not constant 12|error: (near …

hello ! i have a program id like to code , and it uses from 3 upto 15 members of a structure , id like to ask , [COLOR="red"][I]1,[/I][/COLOR] is there a way to not define all members of a structure at the start but add members as needed ? …

Hello Everybody. I'm with a classic problem in C preprocessor concatenation. This is the situation: [CODE] #define BAUDRATE(VAL) (B ## VAL) //... const uint32_t BAUDRATE_VAL[] = {1200, 2400, 9600}; //... br = BAUDRATE(BAUDRATE_VAL[i]); //... [/CODE] This code, result in the error: BBAUDRATE_VAL undeclared I need that the result of concatenation …

im trying out using malloc in array of characters by reading each word from that text file and putting it in a array so the array size is exact my problem is when i run the program it makes segmentation fault im not sure where the problem is and if …

In fact I had a logfile, that I decoded, by reading his contents byte after byte and save it in a Byte Array. And there after I converted my array of byte in hexadecimal value, and Save it in a stringbuilder. But now my problem is the following, how to …

Hello im makin a program in C tht will query my database when i use the following code i get an error "segmentation fault" [code] //retreive configuration items from the mysql database mysql_query(conn, "SELECT callcost FROM imds.testset Where callcost BeTWEEN 900 and 1000;"); results = mysql_store_result(conn);[/code] even when i use …

hey can anyone convert this c code into c# [CODE] #include<stdio.h> //Assume following return types while writing the code for this question. int output1; void GetBuildingCount(int marineCount,int marinePositions[][2]) { int x,y,i,j,temp; for(x=0; x<marineCount; x++) { for( y=0; y<marineCount-1; y++) { if(marinePositions[y][0]>marinePositions[y+1][0]) { temp = marinePositions[y+1][0]; marinePositions[y+1][0]=marinePositions[y][0]; marinePositions[y][0] = temp; } …

Hello there, I recently decide to learn and code Windows Services, After I learned the bare basic I thought I would make a program that logs the users program usage every 60 seconds I have coded the same thing without putting it in a service but apparently Services work differently …

Hi ,programmers! Please tell me why it's possible to use such condition - [CODE][U]if (!fork ( ))[/U] return 1;[/CODE] as I know the fork() returns pid_t-type but at the same time "if" needs boolean.. big thanks in advance)

Hi, I was wondering what libraries there are out there to do some simple sound generation. For example sine waves, square waves etc.. I'm on Linux, so no Microsoft stuff please.

I have a class that looks like this [CODE] //the mem_data class======================================// class mem_data { public: mem_data(int,int,std::string); ~mem_data(); private: std::vector<reader> mem_store; int complete; friend class model_base; }; [/CODE] Now, I would like to let the class model_base access mem_store My main code will contain the following: [CODE] mem_data test_data(20110601,10,"test_file.csv"); model_base …

In the below snippet,Rewind() wraps up the file but still the no of records exceed the MAX value set. if(no_of_msg_records >= MAX) { rewind(fp_msg); no_of_msg_records=0; } ie the no_of_msg_records in the file exceeds MAX value.

Ok heres my problem the code is working fine but i cant read extended ascii characters i got a tip that the problem is that extended ascii characters are 16 bits not like the original 8bits per character i dont know where to start can you gets give me tips …

[CODE]#include<stdio.h> #define UN_IN -1 #define COL 10001 #define ROW 5000 int main() { int r,c; long int a[ROW][COL]; for (r=0;r<ROW;r++) for(c=0;c<COL;c++) { a[r][c]=UN_IN; // b[r][c]=UN_IN; } printf("%d %d", a[34][56],a[12][67]); getch(); return 0; } [/CODE] I was solving a problem which required large input. Am using a two dimension array but …

[CODE]int i, j; for(i=2;i<1000;i++){ for(j=2;i/j;j++){ if(!(i%j)) break; if(j>(i/j)) cout<<i<<" is prime\n"; } }[/CODE] Can somebody experienced clear me how this program actually finds prime numbers... The line with the last if condition confuses me most -> j > (i/j)

Hi, I am new in C, trying to create a simple C file, that assign a value for a struct member with the type of string. I can't figure out why it said error : string.c:20: error: expected expression before ‘{’ token, but I don't find any syntax error.. [CODE] …

I''ve got a struct like this: struct Node { int n; Node *left; Node *right; } I build up a binary tree from this struct. Now, how can i save the binary tree onto the hard disk, and how can i rebuild it from the hard disk ?

[CODE]#include<stdio.h> #include<conio.h> #include<stdlib.h> struct a{ char *c; int b; }t; int main() { scanf("%s %d",t.c,&t.b); printf("%s",t.c); getch(); return 0 ; }[/CODE] I guess there is some problem in receiving input (more precisely in t.c part). Further assistance will be appreciated.