19,876 Topics
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| | Q.Write a function to concatenate to input strings into one large string and display the result. I know how to do this using strcat but not without it. Also can't use pointers. Please help!!  |
| | I have a text file which looks like this : Flooding refers to all water that overflows a node, whether it ponds or not. -------------------------------------------------------------------------- Total Maximum Maximum Time of Max Flood Ponded Hours Rate Occurrence Volume Depth Node Flooded CMS days hr:min 10^6 ltr Meters -------------------------------------------------------------------------- 1064 0.15 0.000 …  |
| | #include <asm/uaccess.h> #include <asm/system.h> #include <linux/types.h> #include <linux/kernel.h> #include <linux/string.h> #include <linux/mm.h> #include <linux/socket.h> #include <linux/in.h> #include <linux/inet.h> #include <linux/netdevice.h> #include <linux/fcdevice.h> #include <linux/skbuff.h> #include <linux/errno.h> #include <linux/timer.h> #include <linux/net.h> #include <linux/proc_fs.h> #include <linux/init.h> #include <net/arp.h> |
| | We are trying to send several emails via C language on a centos 6.2 platform. Below are the codes. I added and left char *filename = ""; the I get error as sh: TEST: No such file or directory sh: TEST: No such file or directory sh: TEST: No such … |
 | BYTE GetByte(char* sBuf, int& index) { int t_index = index; index++; return (BYTE)(*(sBuf+t_index)); } int GetShort(char* sBuf, int& index) { index += 2; return *(short*)(sBuf+index-2); } and i cannot convert this  |
| | using System; using System.Collections.Generic; using System.Linq; using System.Text; using System.IO.Ports; using System.IO; using System.Runtime.InteropServices; namespace PortDataReceived { class Program { static void Main(string[] args) { SerialPort mySerialPort = new SerialPort("COM1"); if (mySerialPort.IsOpen == true) mySerialPort.Close(); mySerialPort.BaudRate = 2400; mySerialPort.Parity = Parity.None; mySerialPort.StopBits = StopBits.One; mySerialPort.DataBits = 8; mySerialPort.Handshake = Handshake.None; … |
 | facing problem to copy string to a structure via function.can input the name but just cant copy it.can anyone help #include<stdio.h> #include<stdlib.h> char copy(char *);//declare prototpe; typedef struct{ char student_name[20]; int count; }student_data; student_data *p;// declare structure variable; student_data s;//declare structure variable; int main() { p=&s;//give p the address of … |
 | Dear All, How to read a csv file in c? Thank you in advance. |
| | Hello I have made a little program in C#. I am writting it in notepad and compiling via command prompt. But when i start that program there is console window and I dont know how to hide it. Here is the code: [CODE]using System.Diagnostics; class Program { static void Main() … |
| | i am trying to assing value to a structure member using pointer and then increment and print it .so i write the following code.not working though.how to fix this or how can i do something like this.help please #include<stdio.h> #include<stdlib.h> typedef struct{ int count; }number; int main() { number *p; … |
| | how to include c++ dll in a windows application created in c#? |
| | I'm learning to get used to the pointers in C and I have a question about them that I coudln't understand. Anyways, why this code gives segmentation fault? void print_arr(const char *p_array[]){ int index; for(index = 0; p_array[index] != 0; index++) printf("%s\n", *p_array[index]); } while the one without a '*' … |
| | Here is a sample exam. What other kinds of questions do you think I could prepare before walking in there since all resources are permitted? Write a single program which contains functions to do the following steps. Each of these steps involve reading the file above and displaying some of … |
| | I am trying to allocate memory for three string and print it to screen.but it isnt working .can anyone explain what's wrong here #include<stdio.h> #include<stdlib.h> #include<string.h> int main() { char **name; int i; name=(char **)malloc(3 * sizeof(char *)); while(i<3){ name[i]=(char *)malloc(20 * sizeof(char)); } while(i<3){ scanf("%s",name[i]); } while(i<3){ printf("%s",name[i]); } …  |
| | Show 10 students data ( student id, father's name, phone number, mail id) in a file and write a C program to display the student's data whose id is given by a user through the keyboard. Please help me out in solving this program. I know how to read data … |
| | How to call a C++ function which is compiled with C++ compiler in C code? |
 | Hi Guys, i am currently creating a database in c#, this i can do, the problem i am having is trying to network it to my wifes pc, after i build (release version) i transfer to my wifes pc, but it doesnt work, says that the database is read-only? and … |
| | Just a thought that woke me up this morning. A means of providing 'property' type constructs in C++ classes similar to python properties. # Header # #ifndef _HXX_CPROP #define _HXX_CPROP /** * Helper class to connect a 'property' in a * c++ class to getter/setter methods * */ template<class T, … |
 | I wrote a program, in which my code is checking the word entered by user and the word in a file. If the words are not same, the file is deleted. i closed the file using **fclose(fp)**, (where fp is file pointer) and to delete the file i used **system("del … |
| | what is top down in writing an algorithm ? and what are differences of it and stepwise ? |
| | urgently need programms on encyption and decrypation on C language |
| | # copy string into a structure # all i am trying to do here is to copy a string input given by user into an arry decleared inside a structure.but my code is not working. anyone please explain to me why this code isnt working #include<stdio.h> #include<string.h> typedef struct{ int … |
| | error in ma program it shows the last digit twice. #include<conio.h> #include<stdio.h> int main() { int fib(int); int n,c,a=0,b=1; printf("enter a number: "); scanf("%d",&n); printf("%d %d ",a,b); c=fib(n); printf("%d ",c); getch(); } int fib(int n) { int a=0,i,b=1,sum; for(i=0;i<n-2;i++) { sum=a+b; a=b; b=sum; printf("%d ",sum); } return(sum); }  |
| | Hi All, I need your guidance for a project (using Visual Studio + MFC) I'm doing. I want to create page flipping animation of a book. There should be a book and when I click on a key then the next page should be displayed. You get the idea? Similar … |
| | hey i have a project on logic circuit simulation.i don't know how to include basic gate images in my code,so that it is displayed with the chosen gates output.i have jgrasp c_compiler.so plz help me out. #include<stdio.h> int And(int a, int b); int Or(int a, int b); int Not(int a); …  |
| | # copy string into a structure # **all i am trying to do here is to copy a string input given by user into an arry decleared inside a structure.but my code is not working. anyone please explain to me why this code isnt working** #include<stdio.h> #include<string.h> typedef struct{ int … |
 | sir i need c code to generate random numbers between 1 to 100 and where the user can select the range(say 50 random numbers between 1 to 100 or 20 random numbers from 1 to 100 ) such that generated random sequence are not psuedo random numbers when it is … |
| | # 2-D string implementation # ## i am new to c.anyone please help me why this code is not working## #include<stdio.h> #include<stdlib.h> #include<conio.h> typedef struct{ char name[2][10]; }college ; int main() { college student; student.name={{"james"}, {"carter"}}; printf("%s %s ", student.name); getch(); } ** |
| | I'm creating a XML-viewer which should be able to read **every** XML file and put it in a treeview. My goal is to create a XMLViewer control, an user should be able to change certain routines in his own implementations. I provide default implementations that offer a basic functionality so … |
 | **This is a sample text file. Your program should add a space after the following comma,and after this comma,but not after this comma, because there is already a space. Similarly, it should add a space after the following fullstop.And after this fullstop.But not after this fullstop. Goodluck.** # I want … |
| | This is the code do look at it. I just want change it in switch statement. will stuck in it. it is unix code. commands[0] = (char *)"ls"; params[0] = (char*)0; commands[1] = (char *)"who"; params[1] = (char*)0; commands[2] = (char *)"date"; params[2] = (char*)"+%d/%m/%y"; commands[3] = (char *)"ps"; params[3] … |
| | How do I write a recursive function in C++ to display a triangle of * like this using a parameter size (e.g. 4 in the following example): * ** *** **** I am able to write a recursive function to display an inverted triangle like this: **** *** ** * …  |
| | Hello. I am writing a program that computes net pay by the user entering in hours and payrate. There can only be one decimal, two numbers after the decimal, and no letters. When payrate is entered wrong, it displays the correct error message. For hours, it doesn't even though it … |
| | cout << "Enter Student ID (999 to end): "; cin >> searchId; inFile.open(file + ".txt"); inFile.ignore(80, '\n'); while (searchId != 999) { for (int i = 0; i <= count; i++) { inFile >> ID >> lastName >> firstName >> q1 >> q2 >> q3 >> q4 >> final; if … |
 | Hi im using turbo C++ compiler and im currently learning C. Iand have an assignment that i need to make a program that solves mathematical problems. Well first is that. the user would have to input a problem in whichever way the user wants. like this example: (5*2)+2-2/2 it could … |
| | The "r" function works well! #include <stdio.h> #include <string.h> #include <stdlib.h> int main(void){ FILE *file_r, *file_w; int c; char fileread[40]; char filewrite[40]; printf("Enter filename to be copied: "); gets(fileread, 40, stdin); fileread[strlen(fileread)-1] = '\0'; file_r = fopen(fileread, "r"); while(file_r == NULL) { printf("Invalid file, ealnter again!"); fgets(fileread, 40, stdin); fileread[strlen(fileread)-1] … |
| | Anyone can help? What is the codes to let the word in twinkling motion? I am in trouble of it >< |
| | I'm new to win32 application building using C. I'm using DEV C++ and I'm able to get a window, by using the "windows application" icon in DEV. I want to know how to display our text on to the window??? That'll be very helpfull! This is the readymade code generated … |
| | a) Write an algorithm to add and multiply two large integers, which cannot be represented by built-in types. b) Write a “c” function to find recursively the maximum and minimum element of an array A of size “n” elements. Find also the number of comparisons required for this. a) Write … |
| | why in a calculator program using command line argument multiplication not done???? in Gcc |
 | I am trying to access a string. wchar_t *str; char *Pname; FILE *fp; str = somefunction(); Pname = str; fp = fopen ("/tmp/test","a+"); fprintf(fp,"%s\n",Pname); fclose(fp); str actually contains "ABigName", but the file simply contains the first letter, "A". |
| | Okay I am trying to write a program where a parent process creates three child processes. Also waits for each of them to finish. Here is my code: [code] #include <stdio.h> #include <unistd.h> main() { int i; // create 3 child processes for (i = 0; i < 3; i++) … |
| | is it possible to pass an already defined function into a pthread? so for example within my code i am able to define an array size once a user enters an array size(for example user enters 200) it will add the numbers 1-200 to an array , i then have … |
 | Hi, I've been having some problems with the getchar() statement. When I put it in a loop (to make an interactive input), I can't get user input anymore from within the loop. Even the following simple program doesn't work: [code] #include <stdio.h> #include <stdlib.h> int main(void) { char response, text[255]; … |
| | This is a simple calcualtor program. What I don't understand is how I could modify it so that the calculation parameters could be intered from cmd. I don't understand how the argv and argc really work in this case. Do I need to replace all the ints with argv or … |
 | Hi, I have a function which returns a pointer to array with data: `float * EZ_MATH::EZ_GE_BY_ME() { ... }` Now, how can I access this data? This doesnt work: `float * memA = temp_m.EZ_MATH::EZ_GE_BY_ME();` `ofstream output("out_file", ios::out);` `output << memA[0] <<endl;` `output << memA[1] <<endl;` Help!  |
| | Hi , I have this code for win xp `char NotesDir[] = "\\Program Files\\notesw32"; char Fname[] = "C:\\Program Files\\notesw32\\notes.ini"; char Bakname[] = "C:\\Program Files\\notesw32\\notesini.bak";` But for win 7 , these files will be present in c:\\Program Files (x86) folder. How do i make sure my code works for both xp … |
 | #include<stdio.h> #include<conio.h> int main() { long double p=778.567; printf("%Lf",p); getch(); return 0; } it's output is : -115403.... something... why is it so ? |
| | The following short program is taken from a book in numerical analysis (by Mircea Andrecut). It's about bisection (very simple): #include<stdio.h> #include<stdlib.h> #include<math.h> double f(double x) { return x*x-3; } double bisection(double f(double), double a, double b) { double epsilon = 1E-7, x; int kmax, k; if (f(a)*f(b) > 0) … |
| | how to write a program to stimulate a bank transaction. there are two bank accounts : checking and saving. first, askk for the initial balance of the bank accounts ; reject negative balance, then as for the transaction ; option are deposit, withdraw, and transfer. then ask for the account …  |
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