[c] Forum Topics

THIS PROGRAM IS not yet complete the only problem is when the program calls for the find it process..it does not work perfectly i don't know why..but when i separate it its working..please help me with this.. this is how it looks separated from the optional program: #include<stdio.h> #include<conio.h> int …

Hi, I always tried and SEARCHED for this but low chances to find out the answer, an example. I try to DETECT whether 2 pins of COM port are connected or not. If you have at least very low electronics knowledge you'll understand this. It's like having a relay or …

hi ,i want to know that if i m taking the input from user in C through scanf what should be the code if the requirments are following. 1.should accept string minimum of 3 and maximum of 15 characters. 2.accept alphabets ,blank space hyphen(-)and & 3. first latter should be …

Hi. Ive made this program using if statements i see no errors in it but i dont know my program isnt working on my if statements i mean the if statements are not used in the output. Can u plzz figure out the problem? It works only till scanf statement. …

i am trying to read a text file like this and store each number as an integer (without the decimals) and print them 1 3 5.6 3 2.1 4 2 2 3 4.2 1 here is what i have now [code=C] #include <stdio.h> #include <conio.h> void main() { int i, …

/* MATRIX ADDITION */ #include<stdio.h> #include<conio.h> #define MAX 100 struct Matrix { int Element[MAX][MAX]; int No_of_Rows; int No_of_Cols; }; void MatrixAdd(const struct Matrix *,const struct Matrix *,struct Matrix *); int i,j; void main() { int p,q; struct Matrix Mat1; struct Matrix Mat2; struct Matrix res; clrscr(); printf("\nEnter size of the …

I can't find the error and also C2182 error: illegal else without matching if. [code=c] #include <stdio.h> int main (void) { int count=0; //counter int hours; //hours char choice; //users choice for continuing float total=0; //total charge //print display printf ("%-15s %-10s %-10s","Customer","Hours","Total Charge"); //assinging customer number count++; //ask for …

Hello every one, I have a confusion regarding arrays and pointers, My question is: "Is array name a pointer (rather a constant pointer)"?? I feel the answer is 'yes' because we can use the de-referencing operator(*) with the array name, Also, because array name is a constant pointer so we …

i want to show output like this [code] A B C D E F G F E D C B A A B C D E F F E D C B A A B C D E E D C B A A B C D D C B …

void main() { int number; totalCallsPtr pcall=NULL; getData(&pcall,&number); } void getData(totalCallsPtr* pcall,int* number)//get data from the text file { int i,n; FILE *f1; f1=fopen(INPUT, "r"); if (f1==NULL) printf("File not open!\n"); else { fscanf(f1,"%d",&n); *pcall=((totalCallsPtr)malloc(n*sizeof(CALL))); } if((*pcall=(totalCallsPtr)malloc(n*sizeof(CALL)))==NULL) printf("not enough memory to allocate"); for(i=0;i<n;i++) { fscanf(f1,"%d ",&pcall[i]->day); fscanf(f1,"%d:%d:%d ",&pcall[i]->startCall.hours,&pcall[i]->startCall.minutes,&pcall[i]->startCall.seconds); fscanf(f1,"%d:%d:%d ",&pcall[i]->endCall.hours,&pcall[i]->endCall.minutes,&pcall[i]->endCall.seconds); fscanf(f1,"%c",&pcall[i]->type); …

Hello, I have a question I should write a program that read words from file text and sort it by ABC letters in array, and ask the user to enter a sentence and chcking if the words in the sentence existing in the array. the program checking all the words …

i need help regarding determining the longest word of a string..we would enter a sentence and the program would display the longest word/s i have read ideas about the strtok but i cant seem to understand it that much..and we havent discussed that yet so my prof might question it..i …

Which is in higher demand in the job market right now???

Hi, how would I make a simple kernel in C that I could boot on my PC?

Please does anybody has a solution to the following topic: Application of first order homogeneous differential Equation to life situation such as Capacitor discharge. . (1) Describes the steps involved in the problem solution (2) Create the algorithm to solve the problem (3) Analyze the algorithm design (4) Implement the …

I wrote this program and I need to know if I didn't make a mistake Let arr be an array of 20 integers. Write a program that first fill the array with up to 20 input values and then finds and displays both the subscript of thee largest item in …

Hi, I am now trying to install a C library zlib to be /usr/local/include/zlib, /usr/local/lib/zlib and /usr/local/share/man. Here is the relevent part in the configure file of the library: [QUOTE] prefix=${prefix-/usr/local} exec_prefix=${exec_prefix-'${prefix}'} libdir=${libdir-'${exec_prefix}/lib'} includedir=${includedir-'${prefix}/include'} mandir=${mandir-'${prefix}/share/man'} [/QUOTE] First, what does "-" mean in "prefix=${prefix-/usr/local}"? Second, how can I achieve what I …

I have a text file containing several lines of IP's and Ports with 3 sets per line. For example: [CODE]IP1=1.2.3.4 PRT1=100 IP2=2.3.4.5 PRT2=200 IP3=3.4.5.6 PRT3=300 IP1=12.34.56 PRT1=1000 IP2=2.3.4.5 PRT2=200 IP3=3.4.5.6 PRT3=300[/CODE] I want to read in each line, see if PRT1 matches a specific port, if so then print out …

I am doing an extra assignment for my CSCI class. The assignment asks to create a program that calculates hours for customers in a parking garage. i wrote my program out and now i am trying to break it down into custom functions. i was doing fine until i got …

[CODE] #include<stdio.h> #define COUNT 5 void enter(int *p_arr); void report(int arr[], int count); int main() { int arr[5]; int i; for(i=0; i < COUNT; i++) { enter(&arr[i]); } report(arr, COUNT); } void enter(int *p_arr) { int i; int insert; printf("\nplease enter the number:"); scanf("%d", &insert); p_arr[i]=insert; } void report(int arr[], …

hi, i m mohan i hv problem related to file handling. i hv two txt files emp.txt and dpt.txt.these are following emp.txt 1111 Tata 1000 12354663 1112 Suresh 1001 -46436433 1113 Hari 1002 46546735 1114 Ramaji 1000 -54651324 where 1111 is a empId,Tata is EmpName,1000 is DeptCode and 12354663 is …

I was creating some sort of text editing program. Whose display and file writing are going parallely. How to clear the character in the file when i dont back space. I tried clear character by replacing with Space(32), NULL(0), but it didn't workout fine.. just replacing the character...how do delete …

Hello, I had no idea which title I should have chosen. Anyway, I'll try to explain my problem. What I'm trying to do is to prevent some code using functions in a header. This problem causes invulnerabilities in my application. I made a test program to show what exactly I'm …

hi i m mohan sahu.i m using turbo c( borland compiler) and working with windows xp. i have one header file say myheader.h having only declarations of all functions and one myfunc.c file having only definitions of all function without main and i m including header file with #include "myheader.h" …

Hello, I'm not sure that this shouldn't be in the Computer Science Board because it is mostly a theory question, but it is also implemented in C, so here it goes. I've been looking at some ways to make a modifiable array to hold geometric data for a simplistic 3D …

I'm moving from VB to C, I've learned about the basics of c upto using arrays. I'm self-studying & experimenting now how to display text files as databases. this is the code i use to display text files: [CODE] #include<stdio.h> int main() { FILE *f; char buf[100]; f = fopen("test.txt","r"); …

Hi all, I've a MAC address (ex- 00:06:cf:45:e5:d9) in a string format.Is there any way to convert this string to hex value, so that i can able to fill the MAC address structure ([B]struct ether_addr[/B]) thanx in advance

i have exams tomorrow and i really really need someones help on my problem. here how it goes: "we have 100 students info such as surname,name,id and grades for 6 lessons for those students. the program must: - can take grades from 1 to 10 - can calculate and find …

hi all, i used the search function, but the threads i found didnt really help me much since i am quite a newbie and didnt understand how it worked. so what i am trying to do seems simple but it doesnt work. i have a textfile with a single line …

Dear Sir/Madam, I'm currently trying to compare a value from an array vs (In the first instance) A set character, and (in the second instance) against a set integer. None of the comparisons are ever returning true even when they appear to be the same on a printf statement, although …

Hi i'm new to C programming, and i have this homework which i need to do on compounding interest, i would like to know whats wrong. it says, "Run-Time Check Failure #3 - The variable 'HoursWorked' is being used without being initialized." same with other variables. below is my code. …

i just want to know whether we can allocate a 2d array dynamically . Dynamically in the sense can we add both rows n columns when ever we want.

[B]Hello, I am developing the project of "[COLOR="Green"]Employee Information System" using C language[/COLOR], In this project i want to add the mobile number for the each employee {[COLOR="green"]Each Mobile number having 7 characters, Bcoz if we using the integer means, Any of one employee has no mobile number it’s not …

I'm trying to write a pair of classes (a client and a server) that can communicate with each other. I am relativly new to C so any pointers would be great! My simple server code (server.c) so far is: [CODE=C]#include <stdio.h> #include <stdlib.h> #include <sys/socket.h> #include <sys/types.h> #include <netinet/in.h> #include …

Hello, Out of fgets() and gets() which function is safe to use and why? Thanks

Hi I am using Visual 6 C++ and try to retrieve a member's all closed trades. i declare a string as below: char str[8000]={0}; But this declaration is ok and the program work fine if the member's record size does not exceed 8000bytes. In order to be able to retrieve …

Hi all, I am getting a compiler error for the following: [U]The following is the declaration in the header:[/U] void init(INBUFF ** , OUTBUFF ** ); ---->line no 21 [U]The following is the function init:[/U] void init(INBUFF ** inbuffptr, OUTBUFF ** outbuffptr) { ------------------->line no 81 *inbuffptr = (INBUFF *) …

Hi All. I'm new to the forum. I'm having some issues with my program. I seem to be accessing memory that I shouldn't be (surprise, surprise!), but I can't see the problem. Keen eyes are welcome! Any help appreciated. Sample input: [icode] Enter word for retrieval: the[/icode] Sample output: [icode]You …

[COLOR="Green"][B][COLOR="Green"]uhm... i really need your help about this... below is the problem but i have my own turbo C code. and the problem in my code is that i cannot total and average the scores that i restore in my arrays...[/COLOR][/B][/COLOR] write a program that will process the exam scores …

Lets say people say 1,3,4,6,9,10,44 And the correct answer is 5. How do I calculate the closest number to 5? Thanks.

Hi, I am working on a program that opens a file, reads the text, converts the text to uppercase, and then displays it on the screen. If I write the program to just type in a string and convert it, it works fine. If, however, I write it to open …

Hi all i've a file sysdef.dat which looks similar to this : temp = 43; data = 23; temp2 = 34; ... and it goes on up to some values... how do I read only the values of temp and temp2(i.e 43 & 34) from this file... I've also tried …

C PROGRAMMING ASSIGNMENT 1. Express, using pseudo code, the algorithm to compute the nth root of a whole number (for example, the square root of the whole number for is 2). 2. Prepare a flow chart for the above algorithm. 3. The following has to do with the design of …

hi i want to know how to delete lines from text file using command prompt .is there any specific MSDos command for doing this. or any tool available which read,write text file by running command prompt.

I am writing some code to talk to a device via a serial port. I am testing my program by using a loopback, so I can see that what I send is correct. I am sending an unsigned hex array, and when I display the values (before they are sent), …

Hi there, I'm trying to get my Eclipse up and running on CentOS. If I create a project File > New C Project > Empty Project then add a hello.c file with the standard hello world code and then run it i get a Launch Failed: Binary not found error. …

Hey Why does the following code comply in Dev-C++ and it DOESNT in MS VS 6.0? [code=C] #include <ctype.h> #include <errno.h> #include <limits.h> #include <float.h> #include <locale.h> #include <math.h> #include <setjmp.h> #include <signal.h> #include <stdarg.h> #include <stddef.h> #include <stdio.h> #include <stdlib.h> #include <string.h> #include <time.h> void main() { int num; …

help me to find out how to make a program about tictactoe game...its really hard..[B].im hoping for an immediate answer[/B]..thanks>>by the way this is only one of my problems to be finished...

[CODE]header.h file: #include <stdlib.h> #include <math.h> #include <malloc.h> #include <stdio.h> #include <string.h> #define STRBUF 256 /* Default string buffer size */ #define SEPARATOR(a) (a == ' ' || a == ',') ? 1 : 0 #define SUCCESS(a) if(a == NULL) { printf("\nUnsuccessful Allocation");\ exit(0);} #define HASHTBLSIZE 101 typedef struct tupleclass{ …

can anyone tell is there any utility like glib-mkenum for windows