I’m going to try and write some simple ruby programs. Here’s the first one. It prints a triangle of stars like this:<\/p>\n
\r\n*\r\n**\r\n***\r\n****\r\n*****\r\n******\r\n*******\r\n********\r\n*********\r\n**********\r\n***********\r\n<\/pre>\nAnd here is the code:<\/p>\n
\r\nstar_string = "*"\r\n\r\n10.times do\r\n puts star_string\r\n star_string = star_string + "*"\r\nend\r\n<\/pre>\nI hope you can understand it. The program creates a string called “star_string”. Then it loops 10 times. Each time it loops it prints (puts) out star_string, and adds another * to the string. That way star_string gets longer and longer.<\/p>\n
I’m also going to show you how this is done in C++. If you don’t want to learn C++ you don’t need to look at this. But C like languages are so common it’s worth at least gaining some familiarity with the syntax.<\/p>\n
#include
\n#include<\/p>\n using namespace std;<\/p>\n
int main() {<\/p>\n
string star_string = “*”;<\/p>\n
for(int n=0;n<10;n++) {\n cout << star_string << endl;\n star_string = star_string + \"*\";\n }\n\n}\n[\/sourcecode]\n\nCan you modify the program so it prints more than one triangle, like this?\n\n[sourcecode language=\"html\"]\n*\n**\n***\n****\n*****\n******\n*******\n********\n*********\n**********\n*\n**\n***\n****\n*****\n******\n*******\n********\n*********\n**********\n[\/sourcecode]\n\nPost your solution in the comments sections below. Everytime someone posts a solution, I'll try to post a new example and problem the next day.\n\nThe part 2 is now HERE<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"
I’m going to try and write some simple ruby programs. Here’s the first one. It prints a triangle of stars like this: * ** *** **** ***** ****** ******* ******** ********* ********** *********** And here is the code: star_string = "*" 10.times do puts star_string star_string = star_string + "*" end I hope you can […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"jetpack_post_was_ever_published":false,"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":false,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2}},"categories":[1],"tags":[],"class_list":["post-182","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/p1RRoU-2W","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/182","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/comments?post=182"}],"version-history":[{"count":12,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/182\/revisions"}],"predecessor-version":[{"id":192,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/posts\/182\/revisions\/192"}],"wp:attachment":[{"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/media?parent=182"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/categories?post=182"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/41j.com\/blog\/wp-json\/wp\/v2\/tags?post=182"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}