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Description html markup shown to student | Define a function <tt>strlen</tt> that takes a single character array as input, <tt>src</tt>. <tt>src</tt> is a null-terminated character array. Return the number of non-null characters in the string. Example: "hi" should return 2 while "" should return 0. |
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Remarks Comments, history, license, etc. | Originally by Mark Redekopp (redekopp@usc.edu) and Dave Pritchard (daveagp@gmail.com) |
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Template / Reference solution |
using namespace std; // return the length (# non-null characters) of the C-string // (null-terminated character array) passed as an argument \[int]\ strlen(\[char src[]]\) { \[ int x = 0; while (src[x] != '\0') { x++; } return x; ]\ } |
C++ test suite See manual | [ ["check-function", "strlen", "int", ["char[]"]], ["call-function", "strlen", ["\"hi\""]], ["call-function", "strlen", ["\"\""]], ["call-function", "strlen", ["\"hello world\""]], ["call-function", "strlen", ["\"Walk your bike!\""]] ] |
Solution visibility |
Note: problems are open-source by default (see 'Public permissions'). Assumed license for open problems is Creative Commons 4.0 Attribution-ShareAlike unless specified in 'Remarks'.