[ad_1] Well first of all you don’t have quotes around your string. You’re also missing a plus sign. It should be like: string sql1 = “insert into items values ( ‘” + this.name + “‘)”; However, this is a really bad way of handling your SQL queries through C#. You should be using parameterized queries! … Read more
[ad_1] In regards to the suffix, this just looks for an s, you can modify to look for other suffixes. string words = “go bread John yesterday going is music musics”; List<string> wordroots = words.Split(new [] {” “}, StringSplitOptions.RemoveEmptyEntries).ToList(); var rootcount = wordroots .Select(wr => { if (wr.EndsWith(“s”)) wr = wr.Substring(0, wr.Length – 1); return … Read more
[ad_1] Your summation is wrong: s+=((2*i-1) -2*i ); gives -1. You need: s+=i*(2*(i%2) – 1); It will give “-” to all even i‘s and “+” to all odd i‘s. And since you are dealing with whole numbers only, i should be int, as well as all other variables you use: #include <stdio.h> int main () … Read more
[ad_1] This will do what you expect without any concatenation: int compare(char *a, char *b) { char *p1, *p2; int i, len = strlen(a) + strlen(b); p1 = a; p2 = b; for (i=0;i<len;i++) { if (*p1 > *p2) { return 1; } else if (*p1 < *p2) { return -1; } p1++; p2++; if … Read more
[ad_1] I would use Mutex to avoid multiple access to the same recourses. Here you have a brief piece of code to achieve this Mutex mutex; private void StartPolling() { mutex = new Mutex(true, “same_name_in_here”, out bool createdNew); if (!createdNew) { throw new Exception(“Polling running in other process”); } //now StartPolling can not be called … Read more
[ad_1] It’s in one of your compiler’s search paths, or perhaps it does not exist in which case your code probably will not compile. On *nix systems, the search paths are usually /usr/include, perhaps some compiler-specific paths, and any number of paths you gave to your compiler via -I options or similar when you invoked … Read more
[ad_1] I don’t understand why you are using std::vector. You could calculate the sum without using the vector: int k=0,sum=0; for(int i=0;i<s.length();i++) { k = s[i]-‘0′; sum += k; } Note: if you are a little paranoid of the sum value fitting into an integer, you can use an unsigned integer since digits can’t be … Read more
[ad_1] You could try clearing the items first: this.selectAttribute.Items.Clear(); [ad_2] solved How can I delete all the items in combo box? [closed]
[ad_1] You need a ‘throw’ clause to throw an exception. Maybe you’ll get what you want if you change ‘launchException’ to: void launchException() override { std::cout << customInt << std::endl; std::cout << customStr << std::endl; throw CustomException(customInt, customStr); } Also note the ‘override’ keyword. It may help avoiding the warnings you mentioned in the comments. … Read more
[ad_1] I’m not sure what you mean by “correct”; your code is not correct at least in the sense mentione by @SamVarshavchik, and which a compiler will tell you about: a.cpp: In function ‘int getFifoData(unsigned char*)’: a.cpp:20:29: warning: ISO C++ forbids variable length array ‘tBuff’ [-Wvla] uint8_t tBuff[txBuf.size()]; If you want to understand why C++ … Read more
[ad_1] And you really need a solution, supposing positions are int : if (abs(x – this->getLocX()) == abs(y – this->getLocY())) { int cx = this->getLocX(); int cy = this->getLocY(); int dx = (x > cx) ? 1 : -1; int dy = (y > cy) ? 1 : -1; while (cx != x) { cx … Read more
[ad_1] First of all, the declaration of main() is supposed to be int main(int argc, char **argv). You cannot modify that. Even if your code compiles, the system will call main() the way it is supposed to be called, with the first parameter being the number of parameters of your program (1 if no parameter … Read more
[ad_1] You have a problem in your code. Change scanf(“%d”,arr[i]); To scanf(“%d”,&arr[i]); This is done because scanf expects an argument of type int* but you provide argument arr[i] which is of type int. Also add a check that ends the program if user inputs a number which is greater than 10 for the first scanf. … Read more
[ad_1] The result is correct. Try to visualize it: Distance between -110 and 100 is the sum of distance between -110 and 0 (Mathf.Abs(-110 – 0) = 110) and distance between 100 and 0 (Mathf.Abs(100 – 0) = 100). That is: 110 + 100 = 210. Perhaps you have a different operation in mind? If … Read more
[ad_1] Why not just update all after the id that was removed? Like that you don’t need a while, and performance will go up 300%. update questions set no = no – 1 where no > @yourRemovedID [ad_2] solved Loop is not working C#.net