[ad_1] There is no performance difference since the generated code is exactly the same: $ echo “int main() { int number; if (number == 0) return -1; return 0; }” | g++ -x c++ -S – -o /dev/stdout | md5sum 9430c430d1f748cc920af36420d160ce – $ echo “int main() { int number; if (number == 0) return -1; … Read more
[ad_1] try this: if (Catz.Checked) { // do whatever } If I understood you correctly and Catz is a CheckBox then the property you are looking for is probably Checked. This can be true or false In an if statement you can use the bool variable without a comparison operator like “==” to check for … Read more
[ad_1] Some suggestions: Rotate by the full amount d in a single loop (note that the result is a different array b): for (i = 0; i < n; i++) { b[(i+n-d) % n]=a[i]; } Don’t touch the array at all but transform the index when accessing it, for example: cout << a[(i+n-d) % n] … Read more
[ad_1] That would be a way to go on Linux: Compile your program with debug info (g++ -g merger_sort.cpp -o merger_sort) Load it in debuger: >>> gdb merge_sort Run it: (gdb) run. You will see: Program received signal SIGSEGV, Segmentation fault. 0x0000000000400b1e in merge_sort (A=0x7ffffffddda0, p=0, r=1) look at the position in the code: (gdb) … Read more
[ad_1] You can replace the condition in a loop with a delegate. Something like this works: int i = 0; Func<bool> predicate = () => i < 5; for (; predicate(); ++i) Console.WriteLine(i); Just assign a different delegate to predicate if you want a different condition. EDIT: This might be a clearer example: Func<int, bool> … Read more
[ad_1] There are implicit and explicit conversions. A cast is always an explicit conversion and uses the (type) cast operator. C has quite decent type safety when it comes to pointers. Apart from the special case of null pointer conversions, the only implicit pointer conversion allowed is between an object pointer and a pointer to … Read more
[ad_1] struct S { int a, d, p; }; #define S_INITIALIZER { 12, 10, 77 } struct S s = S_INITIALIZER; You (typically) provide a value for each member. If you provide less, the remaining members are zero-initialized (C99, 6.7.8.21). If you provide more, you will get a compiler warning and the additional initializer values … Read more
[ad_1] Does any other language support this? C++ supports it. You can seek and you can write. But the fact that this is a very uncommon scenario to replace the same exact byte length and the fact that replacing a bunch of bytes with another bunch of bytes that has a different length is horribly … Read more
[ad_1] you need a scanner and parser. The scanner splits the input string into tokens. The parser takes those tokens and does the semantic checks and the calculation. The calculation can be done f.e. recursevly. 34-8*(3+1)-1 will become something like [i]34[op]-[i]8[op]*[bo][i]3[op]+[i]1[bc][op]-[i]1 that leads to subtract(34, [i]8[op]*[bo][i]3[op]+[i]1[bc][op]-[i]1) => subtract(34, multiply(8, [bo][i]3[op]+[i]1[bc][op]-[i]1)) => a.s.o. 3 [ad_2] solved … Read more
[ad_1] You need to use it’s .Value property of your object to compare it, not itself. if (dtpTravelDate.Value < DateTime.Now) { MessageBox.Show(“Date Selected Cannot be Before Today’s Date”); } [ad_2] solved operator ‘< ' cannot be applied to operands of type 'system.windows.forms.datetimepicker' and 'system.datetime' [closed]
[ad_1] The idea that “some compilers don’t work properly” is absurd. If you’re comparing C-style strings via char* pointers, then the =, !=, <=, … operators compare the pointers, not the strings they point to. In that case, use the strcmp() function instead. But since you’re asking about the compare function, you’re clearly not asking … Read more
[ad_1] Your problem is evident in your debug output. getline does not strip the newline from the input, so for example you are searching for: “know\n” in “I do not know what to write\n” So your problem is not about stripping the \0 string terminator, but rather stripping the \n line-end. That can be achieved … Read more
[ad_1] According to the C++ Standard (8.3.4 Arrays) 1…An object of array type contains a contiguously allocated non-empty set of N subobjects of type T. Applying to the array definition from your post it means only that four pointers (the elements of the array) to string literals are allocated in contiguous extent of memory. This … Read more
[ad_1] 1/h = 0 and (1/h) += (1/i) don’t work because you’re trying to assign a value the result of an expression, not an object. It’s like writing 1 = 2 and expecting it to be meaningful; it isn’t. You’re trying to solve for h. So you need to sum 1/1 + 1/2 + 1/3 … Read more
[ad_1] I would advise you to take a look at this link: https://www.tutorialcup.com/cplusplus/multithreading.htm It has many examples and lots of theory to read and understand about threads and multithreading. [ad_2] solved How to pass a value in a function and put the function in a thread?