15,552 Topics
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 | Hi there, I am having a problem of passing arrays to functions, here is my code: void zeroMatrix(float **arr); void main() { float e[2][2]; zeroMatrix(e); } void zeroMatrix(float** arr) { int i,j; for (i=0;i<2;i++) { for(j=0;j<2;j++) { *( *(arr +i)+j) =0; } } } The problem is I want to … |
 | would like some ideas of how to acutally create my own cd function from scratch using C programming.I'm building a shell program in C.  |
| | Hi, i have this project where the size, 2d array of size n is scanned from a file; asks for the vertex pairs from the command prompt until the user decides to stop inputting them. There is something wrong with my code because it skips the scanning of int variables … |
| | Hello, I was wondering if someone could help me in this case. I need the program to open a txt file. But the User shall inform the location where the file resides. Can be by text. Example: "C: \ documents \ test.txt". To open files I know just the fopen.  |
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| | I was having a little trouble with parsing my command upon input, I'm new to C so any help would be greatful! Here is what i have so far i'm trying to make a simple unix shell char*token; while(1){ //prints users prompt printf("\n%s@myshell:%s>", username,curDirect); //gets string from command line fgets(buffer, … |
| | Hi All, I am new to c programming. I have mulptiple c files which uses the client.h Currently I am using my header file in each and every place where my c code is placed. Can I put it at one particular location and use it as #include<client.h> in my … |
| | Dear all, I am learning C language. I got the following problem while running the problem. Program: [CODE]#include <stdio.h> #include <math.h> #include <stdlib.h> main() { int x; for (x = 1; x <= 250; x ++) printf("x = %d\n", x); }[/CODE] OUTOUT should be: x = 1 x = 2 … |
 | One of the things which attracted my attention was that there are often newbies asking how to create a password program in C/C++, often they don't succeed, well here's my response, you can use it for any purpose you want, one thing you'll have to keep in mind is that …  |
| | In the last few days, I have noticed a very old thread ... resurrected ... about a non-standard C getline function. To all who may like a C readLine function ... a C function that reads in a dynamic C string of any length ... a function with a similar … |
 | OK so I'm almost done with my program. How to put this in function like putting each case like void Binary2Decimal() , void Octal2Decimal() & , void Hexa2Decimal() in "TURBO C++"? Call a function like I only want to display only the Binary to Decimal case. #include<iostream.h> #include<conio.h> #include<stdio.h> char …  |
| | I installed the New version of dev c++ 5.6 for implement graphics programmes in c and i done all the steps like put graphic.h files,and add linkers in parameters. i done every step correctly but when i go to compile the simple graphics programme it will show the error line … |
| | Hi all, First time poster here, I've referenced posts here on daniweb in the past and it has always been helpful, thanks! But I can't find the answer to this particular problem here on the forums. I need to write a basic string parser as part of a coding assignment …  |
| | #include <stdio.h> #include <stdlib.h> int main() { int i=1,fact=1,n; printf("enter the no of fact: "); scanf("%d",&n); factorial(n,fact,i); return 0; } int factorial(int x,int y,int z) { int r; if(x==1) { r=y*z; printf("the fact is %d",r); } else { factorial(x--,y*z,z++); } } hello iam trying recursion using factorial the complier stops …  |
| | I am trying to parse a date stored as an array of characters. I have a problem to paerse the date with a loop otherwise it works fine. char date[]="20141018"; //the date is 10/18/2014 char _mypointer=date; char year= "YYYY"; char month="MM"; char day= "DD"; year[0]=*my_pointer + 0; month[1]=*my_pointer +1; What … |
| | [CODE] /* Any year is input through the keyboard. write a program to determine whether the year is a leap year or not. */ #include <stdio.h> #include <conio.h> void main(void) { int year; clrscr(); printf("\n\n enter a year::"); scanf("%d",&year); if(year%400==0) printf("\n\n Leap Year."); else if(year%100==0) printf("\n\n Not Leap Year."); else …  |
| | how to complile and execute a c pro in editplus |
 | Hi everyone, I am new here and I hope all of you are doing well. I have spent the whole day searching around on the almighty Google for code that can help me with my problem. In the following code there may be quite a few n00b mistakes, and for … |
 | hey everyone! having a small problem with my pointer. I'm just trying to scan an array using a pointer but when i print it it shows me only zeros. Any help? #include <stdio.h> int main() { int arr[10]; int *ptr; int i; ptr = &arr[0]; printf("Enter 10 integers:\n"); for (i=0; … |
| | write a program in c who get input from key board and then show the addition of numbers  |
| | (Continued from [here](http://www.daniweb.com/software-development/cpp/threads/474128/column-major-not-shown-right#post2070227) ) I am trying to use column major order to a 2d matrix which I am using as 1d. int N=3,R=2; for (int i=0;i<N;i++){ for (int j=0;j<R;j++){ //printf("\nX[%d]=%d\t",i+j*N,res[i+j*N]); //column major // printf("\nX[%d]=%d\t",i*R+j,res[i*R+j]); //row major } printf("\n"); } but the column major doesn not work as it should. … |
| | Can you please explain what this weird int declaration does. Here is the block of code. void show(void *u, int w, int h) { int (*univ)[w] = u; printf("\033[H"); for_y { for_x printf(univ[y][x] ? "\033[07m \033[m" : " "); printf("\033[E"); } fflush(stdout); } This is the line I'm talking about. … |
| | I'm totally new to programming and taking an intro class. When i prompt the user for a state code the program just exits, nothing in my book really goes over this and all im given is crappy youtube videos for reference. Any help is greatly appreciated. #include <stdio.h> #include <stdlib.h> … |
| | Can someone please explain what unistd.h does and the purpose of it? I have been googleing the last hour and I don't understand it. |
 | Design a C program that will convert temperature values from degrees Celsius to degrees Fahrenheit. The user must enter a start and a finish value, together with a step value. The program must convert all temperatures beginning with the start value at the given step interval. Use the …for()… statement … |
 | i asked this on the C++ forum but someone told me to try it here on C. here's my first program there are some error with this program, i can't debug it. what's the problem? #include <stdio.h> #include <conio.h> #include <ctype.h> #include <string.h> int main(void) { int strlen, a, b,c; … |
 | Could some one help me out with the basics of Structures ? How to use them in C programs ? etc.. Thanx in advance. |
 | hi, Can anyone suggest me the approach for finding the lcm of the n numbers? my approach: find the max of the n numbers and start dividing it by all numbers , if all are dividing it then print it, else take next multiple of the max number and repaet … |
 | Hi all, I've bought the book "Objective-C Programming - The Big Nerd Ranch Guide" and I'm running through the beginning chapters which just regard C. I'm doing this on my laptop running linux as I don't have a Mac (yet). I'm having trouble with this code: #import <stdio.h> #include <readline/readline.h> … |
| | I need to create a scenario where all 65535 ports are open. I currently can open 1021 socket desciptors and bind to 1021 ports. If i spawn ~ 70 processes todo the same, i can achieve the goal, but performance is slow. I'm not interested in packet sniffing. How can … |
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