19,876 Topics
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 | I'm about to make code that read the text file line by line, then store it to stucture, then use quicksort. But my code doesn't print anything. Here is my code and text file. #include <stdio.h> #include <stdbool.h> #include <string.h> #include <stdlib.h> struct city{ char nation[2]; char region[10]; char name[50]; … |
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| | [B]Intro[/B] This tutorial provides a brief introduction to the random number functions that come as part of the C++ standard library, namely rand() and srand(). [b]rand() and RAND_MAX [/b] The C++ standard library includes a pseudo random number generator for generating random numbers. In order to use it we need …  |
| | I am trying to a % in a printf statement represent 10%. How do I do that? My compiler warnings are complaining about it. I tried a backslash but that didn't work. printf(" 10\% of people \n");  |
 | Hello, this is my first post here. I'm playing around with Gtk+ and Xlib. I'm trying to get the X window ID of the active window, and then display that ID in a Gtk label. However, when I run it, it seg faults. I've narrowed it down to `XGetInputFocus`, but … |
| | Whats the best way to removes values from array of strings? Is it better to create a new array of strings or is there some way to remove them? |
| | Why does order matter with this if else if statement? if((row1 = mysql_fetch_row(result1)) && adding_to_member_flag != 1) { printf("Do not update date since it already exists\n"); } else if(!(row1 = mysql_fetch_row(result1)) && adding_to_member_flag != 1) { printf("Update end_date and add new team\n"); } When I had it like this the … |
| | My second while condition is being ignored and I don't understand why. I would think I have 1 and 0 = 0 so it would break out. while(fgets(line, sizeof line, stdin) && sscanf_counter != 2) { }  |
| | I am trying to print my data in columns. For some reason every column but the last one lines up. Is there a way to fix this? while ((row = mysql_fetch_row(result))) { //printf("198\n"); for(int i = 0; i < num_fields; i++) { //printf("----------\n"); printf("%25s ",row[i]); if(row[i] == NULL) { printf("No …  |
| | What does this printf do? Not familiar with the question mark, colon, and extra NULL at the end. printf("%s ", row[i] ? row[i] : "NULL");  |
 | I can't slove this problem my code print nothing what's wrong with it ?? #include <stdio.h> #include <string.h> #include <ctype.h> #define total 1000 int weight (char word[total]) { int i; int sum; for (i=0;word[i]!='\0';i++) { sum+=i; } return sum; } char *getword (char temp[total]) { static char max[total]={'\0'}; int lenth,maxlenth; … |
| | When using fgets to read from stdin how do you stop reading from stdin?  |
| | I am using Mplab x Ide with v3.61 on Xc8 compiler, PIC18F24K40. I used MCC generated UART code for send and receive data. For understanding I am clubling my code and posting part of it. My main code look like this #include "mcc_generated_files/mcc.h" #define EUSART_TX_BUFFER_SIZE 8 #define EUSART_RX_BUFFER_SIZE 8 /** … |
 | i made a property tax program but now i have to use it with pointers. i have to use 3 functions inputtotalsales,calculatetaxes,and displaytaxes.It was easy for me to do this the regular way but im having an issue with pointers . im getting errors saying redeclaration of statetax and countytax …  |
| | im trying to write a c program that asks a user for a string and send it to a function that counts the total number each of vowel and total number of all vowels but i am getting 0's for all can someone tell me why? #include <stdio.h> int countvowels(char[]); …  |
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 | testing of independece of attributes by chi square method ,,please write a c code for this. |
| | My program find the amount of specific word such as "whale" and "thee", but ignore "thee,", "whale....", and so on. How can I contain them? #include<stdio.h> #include<string.h> #include<ctype.h> int main(){ FILE *md,*out; char CHA[255]; char cha[255]; cha[255]=tolower(CHA[255]); char thee[]="thee"; char chapter[]="chapter"; char whale[]="whale"; char meet[]="meet"; int th=0; int ch=0; int … |
 | How to do p.o.s system that need enter a switch statement on c++  |
| | How would I split this big if statement across multiple lines? It works perfectly on one line. if (mysql_query(con, "CREATE TABLE Matches(match_id INT UNSIGNED PRIMARY KEY, date DATETIME NOT NULL, tournament INT UNSIGNED, playerA INT UNSIGNED, playerB INT UNSIGNED, scoreA INT UNSIGNED, scoreB INT UNSIGNED, offline bool)")) { finish_with_error(con); } …  |
| | This is what I came up with for reading a csv file with multiple types. It seems to get the job done in all cases but 1,2,,"a". Where there is a blank space. Can I please have some ideas on how to fix this? const char* getfield(char* line, int num) … |
| | I keep getting this message. undefined reference to `mysql_get_client_info' From what I can figure out when I google it I am not linking correctly. So I tried this. gcc *.c -L"C:\Program Files\MySQL\MySQL Server 5.7\lib" Can I please get some help on what I am doing wrong? |
| | I wrote the code that using txt file, but error "0 [main] assignment4 16012 cygwin_exception::open_stackdumpfile: Dumping stack trace to assignment4.exe.stackdump" is only thing that printed to console. Here is my code. #include <stdio.h> int main() { FILE *fp; char buff[255]; fp = fopen("moby_dick.txt", "r"); printf("%c\n", fgetc(fp)); fscanf(fp, "%s", buff); printf("1 … |
 | So, I'm relatively new to programming and I'm working on a program that allows for input of grades, course hours, and then calculates GPA based on that. But, I'm going step by step, the first thing I'm trying to do is ensure that I can input the data so that … |
| | Are there any good tutorials c programming with mysql? I only found one promising link, unfortunately they neglect to to show what is in their header files which doesn't help very much. http://zetcode.com/db/mysqlc/ |
 | typedef struct{ int*p; }new; void main(){ new *buffptr=malloc(sizeof(new)); buffptr->p; } my doubt is the above declaration in main function accesses the value of p and not the address of p. If I want to increment the address of p what should I do? |
 | Write a C++ program that takes in text from the user and prints the total Number of spaces used in the text. Kindly, use #include<iostream> and #include<conio.h> only. while loop is more preferable than for or do-while. |
| | I made first board, but when I use function next_generation, it prints wrong result. For example, since first board is 01000 00100 11100 00000 00000, next one should be 00000 10100 01100 01000 00000 . But my program prints 00000 00100 01100 00000 00000. Here is my code. #include <stdio.h> … |
 | gerard4143 explained 6 years ago how to store binary code in memory and then execute it. See https://www.daniweb.com/programming/software-development/threads/353077/store-binary-code-in-memory-then-execute-it#post1500738. In the example, we create an array of unsigned char containing these values: 0x50,0x57,0x56,0x52,0xe8, 0x00,0x00,0x00,0x00,0x5e, 0x48,0x81,0xc6,0x24,0x00, 0x00,0x00,0x48,0xc7,0xc0, 0x01,0x00,0x00,0x00,0x48, 0xc7,0xc7,0x01,0x00,0x00, 0x00,0x48,0xc7,0xc2,0x0e, 0x00,0x00,0x00,0x0f,0x05, 0x5a,0x5e,0x5f,0x5a,0xc3, 0x48,0x65,0x6c,0x6c,0x6f, 0x2c,0x20,0x57,0x6f,0x72, 0x6c,0x64,0x21,0x0a,0x00 This works fine when I use the … |
| | I am making a bank program with functions.1 called displaymenu that produces a menu d(make deposit),w(make withdraw),b(check balance) and q(quit).2nd function is getdeposit which accepts balance as parameter and asks user for amount they want to deposit then add amount to balance and return it to main function.3rd getwithdrawal same … |
 | Hi, I'm trying to make a program that sets up the hight dpi compatibility mode programatically on Windows 10, so that I don't have to set up manually the properties of every legacy *.exe program I use, there are hundreds. When you set up that on a local drive, Windows … |
| | I wrote an application using pthreads which had 5 threads. 4 of the threads filled up 4 buffers and once they had been filled the main thread would be combine these together. This was achieve using barrier so the main thread would wait until the 4 worker threads had reached …  |
 | So i'm in the process of learning about functions and I'm not grasping the full operation of them. I have a menu in which I have utilized a function but I want to create a fucntion for each of the menu options. I've heard of pointers but I haven't researched … |
 | class space { public static void main(String args[]) { int i; for(i=0;i<5;i++) { System.out.print("*"); System.out.print("_"); } } for(i=0;i<5;i++) { System.out.println("*"); } } |
 | Hello i'm working on this piece of code and I have the idea how it should be. But I believe my assignment is base on boath C and shall formating command to create a menu. The code is working so far fine but in order to move on furthur. I … |
 | simulate enter button with c language pls help me |
| | Writing a function strreplace(s,chr,repl_chr) to replace the character 'chr' with character 'repl_chr' in a givne string s. I have done so far with following code. Getting awkward output. // Program to replace occurence of a character with another character in a string. #include<stdio.h> #include<conio.h> void strreplace(char *,char,char); int main() { … |
| | Hello, I work at the U.S. Department of Labor. I am a maintenance prorgrammer of C code, and the configuration management of this code in the past has been very spotty. When I took over this project, a CM tool was in place I have been doing corret checkins and … |
 | Im having a hard time on how to display the total price when i choose roundtrip, on how to display the price and the total price.. someone please help me pls pls pls Here are the requirements: A. Log in by Username and password B. User can choose either one …  |
 | Hi, I have written a code for Roman Numeral basic mathematical operation in C++. How to do unit testing for it/ How to write unit testing program for it? Here is the code: #include <iostream> #include <string> using namespace std; //Function to convert decimal number to roman string decimal_to_Roman(int number) … |
 | I have learned C programming several years ago, but I would like to refresh my knowledge so looking for some material, which is perfect for this purpose. I have found ALISON courses and I am looking for similar solutions like this, where I can also take tests.  |
 | C++ function that input any of 0-35 numbers, and if input from 0-9 the output are its specific number and if input 10-35 this is the output: 10=A; 11=B; 12=C; 13=D; 14=E; 15=F; 16=G; 17=H; 18=I; 19=J;...35=Z. If possible without using an array. |
 | great C# Programmers! please help me, am developing a field farm software, i have 3 forms _form1_, _form2_, _form3_ _form1_ is just a welcome page then when you proceed to _form2_, its a data collection, where inputs are collected From textboxes(14 rows and 4 columns) and then multiplied at background … |
| | Code Exercise – BIQ-001 Mr.X owns a small business in a region with poor law-and-order. Recently his warehouse has been plagued by thieves. Gangs of thieves raid over his warehouse from time to time, stealing his raw material, affecting his business. He has studied the occurrances and noticed it that …  |
| | Hi all i have listed few C tutorial resources for beginners to learn c programming online [C Tutorial](http://cprogrammingexpert.com/C-Tutorial/) [C - Resources](http://fresh2refresh.com/c-programming) |
| | I can not solve this problem. I should write a code for PROGRAM in C, which finds the longest word of the text enter by the keyboard. Plaese help me!  |
 | Hello Guys I am new to C programming and as a part of an assignment I have made an ATM algorithm in C. Though the compiler shows no errors, the code goes into an infinite loop after the first input. Please Help. Here's the code: #include<stdio.h> #include<conio.h> void main(){ float …  |
| | Hi all few free tutorial sites for beginners are given below. C PROGRAMMING http://learnermode.com/c-tutorial/ C++ pROGRAMMING http://cplusplus.com Java https://docs.oracle.com/javase/tutorial/ C# https://msdn.microsoft.com/en-us/library/aa288436(v=vs.71).aspx Python https://www.tutorialspoint.com/python/ Java Applets http://learnermode.com/java-tutorial/applets/  |
 | i defined a structure for a student `typedef struct {` `char firstName[20];` ` char lastName[20];` `int id;` ` char *birthDate; `} Student;` the function definition for a student is this `Student * createStudent(const char * first_Name, const char *last_Name, int ID, const char * `birthDate_str) {` ` /* Declare a …  |
| | Hi, Currently writing a NFC program (Windows 7-->VC++ MFC ). The reader is connected via USB and when i run the exe, i manually select and connect the reader for the exe to work. my requirement is 1. In the code, identify the wireless network and if my particular reader …  |
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