[ad_1] This could be that the compiler is not seeing the included header file. for statement #include <conio.h> make sure your conio.h header file is in your compilers directory. else you can use #include “conio.h” and place the header file conio.h in the current project directory. This header declares several useful library functions for performing … Read more
[ad_1] You have not instantiated itemname. You need to do this (3 is just a random number): public static string[] itemname = new string[3]; If you didn’t do this, you should have received the error on this line: itemname[id] = “foo”; 0 [ad_2] solved List box Object reference not set to an instance of an … Read more
[ad_1] This should work: for (int i=1; i<=4; i++) { for (float j=i; j<=std::max(1.6, i); j+=0.5) { cout << j << endl; } } The above code will print the desired sequence. 6 [ad_2] solved int and float increment condition in for loop [closed]
[ad_1] The array is better declared and allocated like this: char **lineArray;. lineArray = (char **)malloc(sizeof(char *) * (lineCount-1)); strtok take a string as second argument. Replace const char j=’ ‘; by const char *j=” “; Get rid of the first strtok: lineArray[p]=malloc(strlen(line));//1st bunch of memory allocated strcpy(lineArray[p],line); printf(“%s\n”,lineArray[p]); //token = strtok(lineArray[p],j); //printf(“%s\n”,token); //serialno[p]=atoi(token); //printf(“%d\n”,serialno[p]); … Read more
[ad_1] The first example: char *s1 =”Con Chim Non”; You declare a pointer to a text literal, which is constant. Text literals cannot be modified. The proper syntax is: char const * s1 = “Con Chim Non”; Note the const. In your second example, you are declaring, reserving memory for 100 characters in dynamic memory: … Read more
[ad_1] You haven’t given much details on the format of the file. Just to get you started, you can try something like(using System.Text.RegularExpressions): File.ReadLines(“path”).Sum( line => int.Parse(Regex.Match(line, @”Hours:\s(\d+)”).Groups[1].Value)) [ad_2] solved Reading a specific column from a text file in C# [closed]
[ad_1] Doing a simple loop should work. Horribly in-efficient though. Target is the value you are looking for while arr is the array you are looking for it in. int x = -1; int y = -1; for(int i = 0 ; i < arr.size() ; i++){ for(int j = 0 ; j < arr.size() … Read more
[ad_1] If you have a IEnumberable of KeyValuePairs then you could do something like this: public bool AreAllSame(IEnumberable<KeyValuePair<Int64, MyObject>> list) { return list.Select(kv => kv.Value).Distinct().Count == 1; } Not sure whether it’s really optimized but, it’s shorter! :-] Of course, whatever you’re comparing will need to be comparable. 2 [ad_2] solved Optimizing foreach loop that … Read more
[ad_1] You did not initialize numItems to zero. As unitialized it can be any number, including e.g. negative ones. Because of this your list is not created, hence pointer first points to NULL. Then the code segfaults in the function deleteList, when it tries to free memory at location NULL. 1 [ad_2] solved Program received … Read more
[ad_1] You should compile with g++, not gcc because it’s C compiler and <vector> is a C++ header file (not mentioning <vecotr> which is a typo) If you have to use C compiler, you have to remove all C++ dependencies from header files which are included from the C sources. [ad_2] solved Compile c/c++ program … Read more
[ad_1] This is probably what you want: if(pos != string::npos) { mystring = mystring.erase(0, 13); int z = 0; for(int i = 0; i < mystring.Length(); i++) { if(isalpha(mystring[i])) z++; } if((int)mystring[0]-‘0’ > 3) z++; //(int)mystring[0]-‘0’ converts it to int. if((int)mystring[3]-‘0’ > 1) z++; if(mystring[6] != ‘2’) z++; //No conversion needed for != if(mystring[7] != … Read more
[ad_1] I’d recommend to first read what a call to exit results in. Then I recommend to go through your isAlive code and doublecheck the error handling… 1 [ad_2] solved C (Windows) program exiting without error [closed]
[ad_1] The first parameter of Array.CreateInstance expects the element type of the array. You pass the entire property type, which is, as you have just found out by checking property.PropertyType.IsArray, an array type (specifically, Bar[] – i.e. an array of Bar elements). To get the element type of an array type, use its GetElementType method: … Read more
[ad_1] The first Ghost is the PacMan member blinky. About the last order: Destroying pm1 exectutes ~PacMan(){ if (inky!= NULL) delete inky; cout <<“~PacMan()” << endl; } and then blinky is deleted too. If you want the opposite order, you’ve to write it here. [ad_2] solved The order of destructor
[ad_1] No, the destructor (~myClass) just does the stuff you want him to do when an object is no longer needed, like freeing resources (files, connections, …). Its the opposite of the constructor (myClass), where you set up your object (getting connections, etc). The GC removes all pointers to the myClass-object when it goes out … Read more