C - Revision history

Tim at 15:53, 22 February 2013

2013-02-22T15:53:41Z

2013-02-22T04:53:30Z

@@ Line 78: / Line 78: @@
+     }
+}
 </syntaxhighlight>

2013-02-22T04:41:21Z

← Older revision		Revision as of 00:41, 22 February 2013
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	===[http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime creating 2D arrays at runtime]===		===[http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime creating 2D arrays at runtime]===

			===Two-dimensional arrays != double pointers===

			You almost certainly need dynamic memory allocation for this. You also want to deep copy the contents of the array - it's a non-static local variable, so it's invalid out of its scope. You can't do TYPE arr[sz]; return arr; as a consequence.
			<syntaxhighlight>
			const size_t width = 3;
			const size_t height = 5;
			TimeSlot tmpTimeSlot[width][height];

			systemMatrix = malloc(width * sizeof systemMatrix[0]);
			for (int i = 0; i < width; i++) {
			systemMatrix[i] = malloc(height * sizeof systemMatrix[i][0]);
			for (int j = 0; j < height; j++) {
			systemMatrix[i][j] = tmpTimeSlot[i][j];
			}
			}
			</syntaxhighlight>

2013-02-22T04:33:14Z

← Older revision		Revision as of 00:33, 22 February 2013
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	===[http://www.cs.hofstra.edu/~cscccl/csc145/array2d.c dynamic arrays]===		===[http://www.cs.hofstra.edu/~cscccl/csc145/array2d.c dynamic arrays]===

			===[http://rosettacode.org/wiki/Create_a_two-dimensional_array_at_runtime creating 2D arrays at runtime]===

2013-02-22T03:57:12Z

2013-02-22T03:56:29Z

← Older revision		Revision as of 23:56, 21 February 2013
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	}		}
	</syntaxhighlight>		</syntaxhighlight>

			===[http://www.cs.hofstra.edu/~cscccl/csc145/array2d.c dynamic arrays]===

2013-02-22T03:39:22Z

← Older revision		Revision as of 23:39, 21 February 2013
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	===[http://faculty.edcc.edu/paul.bladek/c_string_functions.htm c (char) string functions]===		===[http://faculty.edcc.edu/paul.bladek/c_string_functions.htm c (char) string functions]===

			===multidim char arrays===
			<syntaxhighlight>
			#include <iostream>
			#include <cstring>

			using namespace std;

			int main(int argc, char *argv[])
			{
			unsigned i;

			// Declaration of the two-dimensional array
			// as a pointer to pointer
			//
			char** array_2D;
			unsigned ROWS = 10;
			unsigned COLUMNS = 10;

			// Allocate "main" array
			//
			array_2D = new char*[ROWS];

			// Allocate each member of the "main" array
			//
			for (i = 0; i < ROWS; ++i)
			array_2D[i] = new char[COLUMNS];

			// Fill the 6th element with a string and
			// print it out
			//
			strcpy(array_2D[5], "Hey there");
			cout << array_2D[5] << endl;

			// Deletion is performed in reversed order.
			// Pay special attention to the delete[]
			// operator which must be used to delete
			// arrays (instead of the "simple" delete)
			//
			for (i = 0; i < ROWS; ++i)
			delete[] array_2D[i];

			delete[] array_2D;

			return 0;
			}
			</syntaxhighlight>

2013-02-21T21:07:28Z

← Older revision		Revision as of 17:07, 21 February 2013
Line 9:		Line 9:
	===[http://www.cs.bu.edu/teaching/cpp/string/array-vs-ptr/ arrray vs pointer]===		===[http://www.cs.bu.edu/teaching/cpp/string/array-vs-ptr/ arrray vs pointer]===

	===http://faculty.edcc.edu/paul.bladek/c_string_functions.htm c (char) string functions]===		===[http://faculty.edcc.edu/paul.bladek/c_string_functions.htm c (char) string functions]===

2013-02-21T15:37:00Z

← Older revision		Revision as of 11:37, 21 February 2013
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	===[http://www.cs.bu.edu/teaching/cpp/string/array-vs-ptr/ arrray vs pointer]===		===[http://www.cs.bu.edu/teaching/cpp/string/array-vs-ptr/ arrray vs pointer]===

			===http://faculty.edcc.edu/paul.bladek/c_string_functions.htm c (char) string functions]===

2013-02-21T15:35:16Z

← Older revision		Revision as of 11:35, 21 February 2013
Line 6:		Line 6:
	strcat( dest, ".txt" );		strcat( dest, ".txt" );
	</syntaxhighlight>		</syntaxhighlight>

			===[http://www.cs.bu.edu/teaching/cpp/string/array-vs-ptr/ arrray vs pointer]===