cpp/classes/location

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Description
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An example of <tt>struct</tt> with pass-by-value.

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Correct answer
Template / Reference solution

Template / Reference solution

#include <iostream>
#include <iomanip>
using namespace std;

struct Location { // define a new data type, Location
int row; // each Location has a row
int col; // each Location has a col
};

\[
void reset_location(Location* loc) {
loc->row = 0;
loc->col = 0;
}
\show:
void reset_location(Location loc) {
loc.row = 0;
loc.col = 0;
}
]\

void print_location(Location loc);

int main() {
Location home; // construct a Location
home.row = 5;
home.col = 10;

\[
reset_location(&home);
\show:
reset_location(home);
]\
print_location(home);
}

void print_location(Location loc) {
cout << "row " << loc.row << ", column " << loc.col << endl;
}

Java test suite
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json list of stdin/args tests
e.g. [{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]
to just run once with no input use [{}]

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{}
]

C++ test suite
See manual

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Property	Value
Description html markup shown to student	An example of <tt>struct</tt> with pass-by-value.
Epilogue html markup shown when solved	remove
Public permissions	remove
Remarks Comments, history, license, etc.	remove
Engine
Choices json list of string, bool pairs e.g. `[["good", true], ["bad", false]]`
Correct answer
Template / Reference solution
Template / Reference solution	#include <iostream> #include <iomanip> using namespace std; struct Location { // define a new data type, Location int row; // each Location has a row int col; // each Location has a col }; \[ void reset_location(Location* loc) { loc->row = 0; loc->col = 0; } \show: void reset_location(Location loc) { loc.row = 0; loc.col = 0; } ]\ void print_location(Location loc); int main() { Location home; // construct a Location home.row = 5; home.col = 10; \[ reset_location(&home); \show: reset_location(home); ]\ print_location(home); } void print_location(Location loc) { cout << "row " << loc.row << ", column " << loc.col << endl; }
Java test suite See manual
C++ test suite json list of stdin/args tests e.g. `[{"stdin":"hi", "args":["4", "5"]}, {"stdin":"noargs"}]` to just run once with no input use `[{}]`	[ {} ]
C++ test suite See manual
Forbidden substrings json list of strings e.g. `["for","while"]`	remove
Solution visibility	remove
Java imports json list of importables e.g. `["java.util.*"]`	remove
Override Java classname else defaults to websheet name	remove
Dependent on other websheets? json list of websheet names in this folder e.g. `["DataStructure"]`	remove
Is example? i.e., just a demo	remove
Add compiler flag(s) json list of flags e.g. `["-Wno-unused-variable"]`	remove
Remove default compiler flag(s) json list of flags see default_cppflags e.g. `["-Wno-write-strings"]`	remove

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