Determines number of times instructions w\/in loop body are processed<\/li>\n<\/ol>\n
#f5f5dc;”>Types of pretest loop:<\/span><\/p>\n
\n
while<\/li>\n
for<\/li>\n<\/ol>\n
#f5f5dc;”>Posttest:<\/span><\/p>\n
\n
Loop condition appears at end of posttest loop<\/li>\n
Determines number of times instructions w\/in loop body are processed<\/li>\n
HOWEVER, instructions processed\u00a0at least once<\/span>–the first time!<\/li>\n<\/ol>\n
#f5f5dc;”>Types of posttest loop:<\/span><\/p>\n
\n
do…while while<\/li>\n<\/ol>\n
#f5f5dc;”>Counter-Controlled Repetition Requires<\/span><\/p>\n
\n
the\u00a0name of a control variable<\/strong>\u00a0(or loop counter)<\/li>\n
the\u00a0initial value<\/strong>\u00a0of the control variable<\/li>\n
the\u00a0loop-continuation condition<\/strong>\u00a0that tests for the final value of the control variable to determine when to exit<\/li>\n
the control variable to be\u00a0incremented<\/strong>\u00a0(or\u00a0decremented<\/strong>) each time through the loop<\/li>\n<\/ol>\n
Using while Loop:<\/em><\/p>\n
\n
\n
Executes from zero to many times, depending on expression<\/li>\n
while is reserved word<\/li>\n
Syntax of while statement:<\/li>\n<\/ul>\n<\/ul>\n
while (expression)\n statement;\n<\/pre>\n
\n
Expression provides entry condition<\/li>\n
Expression (parentheses must be included as part of syntax) must evaluate to true to invoke loop statement(s)<\/li>\n
Statement(s) can be simple or compound (block)<\/li>\n
Statement(s) is\/are body of loop<\/li>\n
BE SURE<\/strong>\u00a0to include an exit condition that will eventually evaluate expression to be false<\/li>\n
Infinite loop: statement(s) continue(s) to execute endlessly<\/li>\n
Loop invocation:<\/li>\n<\/ul>\n
\n
Statement(s) execute(s) if expression evaluates to true<\/li>\n
Loop condition reevaluated<\/li>\n
Statement(s) continue(s) to execute until expression false<\/li>\n<\/ol>\n
#f5f5dc;\">Example:<\/strong>\nint counter=1; \/\/initialize loop control variable\n\nwhile (counter \n
Using for Loop:<\/em><\/p>\n<\/pre>\n
\n
\n
Executes a set number of times determined by the counter<\/li>\n
Statement can be a single statement or a compound (block) statement.<\/li>\n
for is reserved word<\/li>\n
Simplifies writing of count-controlled while loop<\/li>\n
Syntax of for statement (for loop control statements):<\/li>\n<\/ul>\n<\/ul>\n
for (initial statement; test statement (loop condition); update statement)\n statement;\n<\/pre>\n
#f5f5dc;\">Example:<\/strong>\n\/\/printing 1 - 10 using for loop\ncout <\/pre>\n<\/div>\n","protected":false},"excerpt":{"rendered":"
\n
#Mastery<\/a>22 #TC<\/a>1017<\/p>\n
Two types of repetition structures: pretest and posttest loops<\/em><\/p>\n
Pretest:<\/p>\n
\n
Loop condition appears at beginning of pretest loop<\/li>\n
Determines number of times instructions w\/in loop body are processed<\/li>\n<\/ol>\n
#f5f5dc;”>Types of pretest loop:<\/span><\/p>\n
\n
while<\/li>\n
for<\/li>\n<\/ol>\n
#f5f5dc;”>Posttest:<\/span><\/p>\n
\n
Loop condition appears at end of posttest loop<\/li>\n
Determines number of times instructions w\/in loop body are processed<\/li>\n
HOWEVER, instructions processed at least once<\/span>–the first time!<\/li>\n<\/ol>\n
#f5f5dc;”>Types of posttest loop:<\/span><\/p>\n
\n
do…while while<\/li>\n<\/ol>\n
#f5f5dc;”>Counter-Controlled Repetition Requires<\/span><\/p>\n
\n
the name of a control variable<\/strong> (or loop counter)<\/li>\n
the initial value<\/strong> of the control variable<\/li>\n
the loop-continuation condition<\/strong> that tests for the final value of the control variable to determine when to exit<\/li>\n
the control variable to be incremented<\/strong> (or decremented<\/strong>) each time through the loop<\/li>\n<\/ol>\n
Using while Loop:<\/em><\/p>\n
\n
\n
Executes from zero to many times, depending on expression<\/li>\n
while is reserved word<\/li>\n
Syntax of while statement:<\/li>\n<\/ul>\n<\/ul>\n
while (expression)\n statement;\n<\/pre>\n
\n
Expression provides entry condition<\/li>\n
Expression (parentheses must be included as part of syntax) must evaluate to true to invoke loop statement(s)<\/li>\n
Statement(s) can be simple or compound (block)<\/li>\n
Statement(s) is\/are body of loop<\/li>\n
BE SURE<\/strong> to include an exit condition that will eventually evaluate expression to be false<\/li>\n
Infinite loop: statement(s) continue(s) to execute endlessly<\/li>\n
Loop invocation:<\/li>\n<\/ul>\n
\n
Statement(s) execute(s) if expression evaluates to true<\/li>\n
Loop condition reevaluated<\/li>\n
Statement(s) continue(s) to execute until expression false<\/li>\n<\/ol>\n
#f5f5dc;\">Example:<\/strong>\nint counter=1; \/\/initialize loop control variable\n\nwhile (counter \n
Using for Loop:<\/em><\/p>\n<\/pre>\n
\n
\n
Executes a set number of times determined by the counter<\/li>\n
Statement can be a single statement or a compound (block) statement.<\/li>\n
for is reserved word<\/li>\n
Simplifies writing of count-controlled while loop<\/li>\n
Syntax of for statement (for loop control statements):<\/li>\n<\/ul>\n<\/ul>\n
for (initial statement; test statement (loop condition); update statement)\n statement;\n<\/pre>\n
#f5f5dc;\">Example:<\/strong>\n\/\/printing 1 - 10 using for loop\ncout <\/pre>\n<\/div>\n
Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":116,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,3,26],"tags":[511,336,486,40,287],"_links":{"self":[{"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/posts\/13741"}],"collection":[{"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/users\/116"}],"replies":[{"embeddable":true,"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/comments?post=13741"}],"version-history":[{"count":6,"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/posts\/13741\/revisions"}],"predecessor-version":[{"id":19259,"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/posts\/13741\/revisions\/19259"}],"wp:attachment":[{"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/media?parent=13741"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/categories?post=13741"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/kenscourses.com\/tc101winter2015\/wp-json\/wp\/v2\/tags?post=13741"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}