[Solved] Virtual inheritance and default constructor

[ad_1] With virtual inheritance, the most derived class should call virtual base constructor, so: struct D : C<B> // D: ThermostatedRotorJobQueueFactoryStub { D(const X& x, const Y& y) : A(this), C(this, x, y) { cout << “D constructor” << endl; } }; But that is also true for C<B>: template <> struct C<B> : B … Read more

[Solved] Serialise List

[ad_1] You can do this easily using JSON.net. Here’s an example: List<Dictionary<String, Object>> Details = new List<Dictionary<string, object>> { new Dictionary<string,object> { {“abc” , “def”}, {“123”, 234} }, new Dictionary<string,object> { {“abc1” , “def1”}, {“1231”, 2341} } }; // serializing to: [{“abc”:”def”,”123″:234},{“abc1″:”def1″,”1231”:2341}] string json = JsonConvert.SerializeObject(Details); // de-serializing to a new List<Dictionary<String, Object>>. List<Dictionary<String, Object>> … Read more

[Solved] Create a function in C [closed]

[ad_1] Your scanf and printf formatting had issues. Also the conditional check in the if statements were also wrong. You can modify the code as below for proper working… #include <stdio.h> #include <stdlib.h> void Negative_Count(long int,long int); int main(void) { long num1,num2; printf(“Enter two number: “); scanf(“%ld%ld”,&num1,&num2); printf(“you entered %ld%ld \n”,num1,num2); Negative_Count(num1,num2); return 0; } … Read more

[Solved] Changing the if statement into a while statement

[ad_1] For example int A=1; if(A==1){}; is similar to int A=1 while(A!=1). As already mentioned, your loop is breaking. The above statement is also incorrect. int a = 1; if(a == 1) {} //this is true, and will happen once BUT int a = 1; while(a != 1) {} //false on entry, skip loop ( … Read more

[Solved] Not able to figure out the logical error in my code

[ad_1] Generally, the logic of your code is OK except a return value mistake in the empty() function. In the empty(), it should return 1 while stack is empty. int empty(){ if(top==-1) return(0); <– !!! here should return 1 } Otherwise, it will go into the while loop at while(precedence(value)<=precedence(stack[top])&&!empty()) even when stack is empty. … Read more

[Solved] Regex expression in C# [closed]

[ad_1] You should try to fix the source of improperly escaped strings instead of mucking around with a regex. If you can’t do that and are desperate to get something done, one quick and dirty approach would be to remove quotes that don’t border on commas or start/end of string: resultString = Regex.Replace(subjectString, “(?<!,|^)\”(?!,|$)”, “”); … Read more

[Solved] The most accurate timer qt C++

[ad_1] Run a QTimer on a separate QThread which doesn’t do anything else. If you’re running the timer on an already busy thread the timeout events may not come on time or not at all. Make a worker class e.g. “PingPacketWorker”, implement a slot that does pinging. Make a QThread. Connect your QTimer and PingPacketWorker … Read more

[Solved] Simple C code keeps crashing

[ad_1] scanf(“%s\n”, playerName); is wrong because %s call for char* data but playerName here is type char. You have to make playerName an array of characters and set max length of input to avoid buffer overflow. #include <stdio.h> #include <stdlib.h> int main(void) { char playerName[1024]; int playerAge; printf(“What’s your name, and your age?\nYour name: “); … Read more

[Solved] Bash ping script with LCD error message errors

[ad_1] The following lines of code in your program aren’t C at all. They look like a fragment of shell script: lcd_command(LINE_3); {while true; do ping -c1 192.168.10.30 2>&1 /dev/null; //VPN IP lcd_writechars(“STS300”);} {if [[ ! $? ]]; then lcd_writechars(“VPN Lost”); fi; sleep 10; } This won’t work. Rewrite this code in C. (The system() … Read more