database - How to store a table with varying number of columns and rows? C++ -


i'm confused new programming assignment got in class few days ago. asks read info file contains unknown number of rows , columns , sort data. question how do that?

my reasoning if knew number of columns, create array of structures , create new structure each row. since number of columns unknown, don't know how approach this.

also, allowed use <iostream> <fstream>, <cctype> , <vector> libraries.

you use 

std::vector<std::vector<whatevertypeyouwanttostore>>

Comments

Post a Comment

Popular posts from this blog

routing - AngularJS State management ->load multiple states in one page -

Image
i developing site in angularjs ui-router. have situation on button click need change , load 3 state page , 3 looks image .please me how can load multiple pages. in 1 page you need configure router config this: $stateprovider .state("state1", { url: "/url1", controller: "firstcontroller", views: { view1: { templateurl: "templates/template1.html" }, view2: { templateurl: "templates/template2.html" }, view3: { templateurl: "templates/template3.html" } } }).state("state2", { url: "/url2", controller: "secondcontroller", views: { view1: { templateurl: "templates/template4.html" }, view2: { templateurl: "templates/template5.html" }, view3: { templateurl: "templates/template6.html" } }).state("state3", { ...
Read more

php - mysql multiple keyword search in any order -

this question exact duplicate of: php keyword search engine no results [duplicate] i have simple mysql database keyword search functional. results search not being returned if keywords not in same order entered in database. example searching "dog cat lion" return result, searching "dog lion cat" return no results. on how fix issue appreciated. here code. <!doctype html> <html> <head> <meta charset="utf-8"> <title>part search</title> </head> <body> <?php $username = "xxxx"; $password = "xxxx"; $hostname = "localhost"; //connection database mysql_connect($hostname, $username, $password); mysql_select_db("wesco"); $search = mysql_real_escape_string(trim($_post['searchterm'])); $find_parts = mysql_query("select * `parts` `keywords` '%$search%'"); while($row = mysql_fetch_as...
Read more

unity3d - Problems porting a GLSL shadertoy shader to unity -

Image
i'm trying port shadertoy.com shader ( atmospheric scattering sample , interactive demo code) unity. shader written in glsl , have start editor c:\program files\unity\editor>unity.exe -force-opengl make render shader (otherwise "this shader cannot run on gpu" error comes up), that's not problem right now. problem porting shader unity. the functions scattering etc. identical , "runnable" in ported shader, thing mainimage() functions manages camera, light directions , ray direction itself. has ofcourse changed sothat unity's camera position, view direction , light sources , directions used. the main function of original looks this: void mainimage( out vec4 fragcolor, in vec2 fragcoord ) { // default ray dir vec3 dir = ray_dir( 45.0, iresolution.xy, fragcoord.xy ); // default ray origin vec3 eye = vec3( 0.0, 0.0, 2.4 ); // rotate camera mat3 rot = rot3xy( vec2( 0.0, iglobaltime * 0.5 ) ); dir = rot * dir; eye...
Read more