通过打印内部元素地址内容的方式,查看vector元素内容,不限gcc版本:(gdb) 使用GDB调试程序或coredump时,直接 p vec 打印的是vector内部成员的信息,不能直观输出元素的内容。 通过打印内部元素地址内容的方式,查看vector元素内容,不限gcc版本: (gdb)p*(vec._M_impl._M_start)@3$1={5,2,0}(gdb)p*(vec._M_...
int main() { std::vector<int> vec = {1, 2, 3, 4, 5}; std::for_each_n(std::execution::par, vec.begin(), vec.size(), [](int& x) { std::cout << x * 2 << " "; }); std::cout << std::endl; return 0; } 最佳实践 最小化共享资源:减少线程间共享资源的数量可以降低...
//删除array数组中所有的6vector::iterator itor;vector::iterator itor2;itor=array.begin();for(itor=array.begin(); itor!=array.end(); ){if(6==*itor){itor2=itor;array.erase(itor2);//erase后会自动++,指向下一个。下面再++,就跳过了一个。在下面加个continue就可以了。//continue;}itor...
void print(vector<int> vInt,unsigned index) { unsigned sz=vInt.size(); #ifndef NDEBUG cout<<"vector对象大小是:"<<sz<<endl; #endif // NDEBUG if(!vInt.empty()&&index<sz) { cout<<vInt[index]<<endl; print(vInt,index+1); } } int main() { vector<int> v={1,2,3,4,5,6...
#include <syncstream> #include <iostream> #include <thread> #include <vector> #include <print> #define USE_WORKING_IMPL 1 #if USE_WORKING_IMPL void foo(unsigned threadIdx) { auto&& out = std::osyncstream{ std::cout }; for (unsigned i = 0; i < 10; ++i) { std::pr...
return std::make_shared<vector<int>>(); } void assign_vector(std::shared_ptr<vector<int>> p) { int i; while (std::cin >> i) { p->push_back(i); } } void print_vector(std::shared_ptr<vector<int>> p) {
#include <iostream> #include <vector> int main () { std::vector<int> num {1, 2, 3}; for (const int &i : num) { std::cout << i <<"\n"; std::cout << &i <<"\n"; } } 我开始学习指针和向量,但这些主题有时让我感到困惑。
https://github.com/Mq-b/Loser-HomeWorkgithub.com/Mq-b/Loser-HomeWork #include<format>#include<vector>#include<functional>#include<iostream>#include<string>structFrac{inta,b;};template<>structstd::formatter<Frac,char>{std::formatter<int,char>format_int;constexprtypenamestd::basic_format_parse...
#include <cstdlib> #include <iostream> #include <string> #include <vector> #include <ctime> #include <numeric> #include <cmath> #include <sstream> #include <thread> #include <ctime> #include <regex> void PrintMatches(std::string str, std::regex reg){ // Used when your searching a ...
在矩阵中找一个元素为-1的向量 哪里错了?#include #include #include #include #include using namespace std;typedef vector V1;typedef vector V2;void input(V2 m);void print(V1 v);bool find(V2 matrix,V1 v);int main(){V2 matrix;input(matrix);V1 vec;if(find(matrix,vec))print(...