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![ARRAY This absolutely has simplified our declaration of the variables. We can use index or subscript to identify each element or location in the memory. Hence, if we have an index of jIndex, studMark[jIndex] would refer to the jIndexth element in the array of studMark. For example, studMark[0] will refer to the first element of the array. Thus by changing the value of jIndex, we could refer to any element in the array. So, array has simplified our declaration and of course, manipulation of the data.](https://image.slidesharecdn.com/arrayscpu2-161228130009/75/Arrays-cpu2-6-2048.jpg)
![ARRAY One Dimensional Array: Declaration Dimension refers to the array's size, which is how big the array is. A single or one dimensional array declaration has the following form, array_element_data_type array_name[array_size]; Here, array_element_data_type define the base type of the array, which is the type of each element in the array. array_name is any valid C / C++ identifier name that obeys the same rule for the identifier naming. array_size defines how many elements the array will hold.](https://image.slidesharecdn.com/arrayscpu2-161228130009/75/Arrays-cpu2-7-2048.jpg)
![ARRAY Examples of the one-dimensional array declarations, int xNum[20], yNum[50]; float fPrice[10], fYield; char chLetter[70]; The first example declares two arrays named xNum and yNum of type int. Array xNum can store up to 20 integer numbers while yNum can store up to 50 numbers. The second line declares the array fPrice of type float. It can store up to 10 floating-point values. fYield is basic variable which shows array type can be declared together with basic type provided the type is similar. The third line declares the array chLetter of type char. It can store a string up to 69 characters. Why 69 instead of 70? Remember, a string has a null terminating character (0) at the end, so we must reserve for it.](https://image.slidesharecdn.com/arrayscpu2-161228130009/75/Arrays-cpu2-8-2048.jpg)
![ARRAYArray Initialization An array may be initialized at the time of declaration. Giving initial values to an array. Initialization of an array may take the following form, type array_name[size] = {a_list_of_value}; For example: int idNum[7] = {1, 2, 3, 4, 5, 6, 7}; float fFloatNum[5] = {5.6, 5.7, 5.8, 5.9, 6.1}; char chVowel[6] = {'a', 'e', 'i', 'o', 'u', '0'}; The first line declares an integer array idNum and it immediately assigns the values 1, 2, 3, ..., 7 to idNum[0], idNum[1], idNum[2],..., idNum[6] respectively. The second line assigns the values 5.6 to fFloatNum[0], 5.7 to fFloatNum[1], and so on. Similarly the third line assigns the characters 'a' to chVowel[0], 'e' to chVowel[1], and so on. Note again, for characters we must use the single apostrophe/quote (') to enclose them. Also, the last character in chVowel is NULL character ('0').](https://image.slidesharecdn.com/arrayscpu2-161228130009/75/Arrays-cpu2-9-2048.jpg)
![ARRAY Initialization of an array of type char for holding strings may take the following form, char array_name[size] = "string_lateral_constant"; For example, the array chVowel in the previous example could have been written more compactly as follows, char chVowel[6] = "aeiou"; When the value assigned to a character array is a string (which must be enclosed in double quotes), the compiler automatically supplies the NULL character but we still have to reserve one extra place for the NULL. For unsized array (variable sized), we can lare as follow, char chName[ ] = "Mr. Dracula"; C compiler automatically creates an array which is big enough to hold all the initializer.](https://image.slidesharecdn.com/arrayscpu2-161228130009/75/Arrays-cpu2-10-2048.jpg)
![ARRAY Two Dimensional/2D Arrays A two dimensional array has two subscripts/indexes. The first subscript refers to the row, and the second, to the column. Its declaration has the following form, data_type array_name[1st dimension size][2nd dimension size]; For examples, int x Integer[3][4]; float matrixNum[20][25]; The first line declares xInteger as an integer array with 3 rows and 4 columns. Second line declares a matrixNum as a floating-point array with 20 rows and 25 columns.](https://image.slidesharecdn.com/arrayscpu2-161228130009/75/Arrays-cpu2-11-2048.jpg)
Arrays cpu2
- 1. Bhagwan mahavir collegeof Engg. & Technology Sub:Computer Programming & Utilization(210003) Class:Civil-c
- 2. Active Learning on: Array Year :Winter 2016-17 Guided By: Nisha Bhanderi
- 3. Group Members: 1.Krunal koladiya-160060106060 2.Jaymandani-160060106069 3.Parth diyora-160060106502 4.Fenil Soni-160060106159
- 4. Index Introduction OneDimension Array Two Dimension Array
- 5. ARRAY An arrayis a collection of elements of the same type that are referenced by a common name. Compared to the basic data type (int, float & char) it is an aggregate or derived data type. All the elements of an array occupy a set of contiguous memory locations.
- 6. ARRAY This absolutelyhas simplified our declaration of the variables. We can use index or subscript to identify each element or location in the memory. Hence, if we have an index of jIndex, studMark[jIndex] would refer to the jIndexth element in the array of studMark. For example, studMark[0] will refer to the first element of the array. Thus by changing the value of jIndex, we could refer to any element in the array. So, array has simplified our declaration and of course, manipulation of the data.
- 7. ARRAY One Dimensional Array:Declaration Dimension refers to the array's size, which is how big the array is. A single or one dimensional array declaration has the following form, array_element_data_type array_name[array_size]; Here, array_element_data_type define the base type of the array, which is the type of each element in the array. array_name is any valid C / C++ identifier name that obeys the same rule for the identifier naming. array_size defines how many elements the array will hold.
- 8. ARRAY Examples ofthe one-dimensional array declarations, int xNum[20], yNum[50]; float fPrice[10], fYield; char chLetter[70]; The first example declares two arrays named xNum and yNum of type int. Array xNum can store up to 20 integer numbers while yNum can store up to 50 numbers. The second line declares the array fPrice of type float. It can store up to 10 floating-point values. fYield is basic variable which shows array type can be declared together with basic type provided the type is similar. The third line declares the array chLetter of type char. It can store a string up to 69 characters. Why 69 instead of 70? Remember, a string has a null terminating character (0) at the end, so we must reserve for it.
- 9. ARRAYArray Initialization Anarray may be initialized at the time of declaration. Giving initial values to an array. Initialization of an array may take the following form, type array_name[size] = {a_list_of_value}; For example: int idNum[7] = {1, 2, 3, 4, 5, 6, 7}; float fFloatNum[5] = {5.6, 5.7, 5.8, 5.9, 6.1}; char chVowel[6] = {'a', 'e', 'i', 'o', 'u', '0'}; The first line declares an integer array idNum and it immediately assigns the values 1, 2, 3, ..., 7 to idNum[0], idNum[1], idNum[2],..., idNum[6] respectively. The second line assigns the values 5.6 to fFloatNum[0], 5.7 to fFloatNum[1], and so on. Similarly the third line assigns the characters 'a' to chVowel[0], 'e' to chVowel[1], and so on. Note again, for characters we must use the single apostrophe/quote (') to enclose them. Also, the last character in chVowel is NULL character ('0').
- 10. ARRAY Initialization ofan array of type char for holding strings may take the following form, char array_name[size] = "string_lateral_constant"; For example, the array chVowel in the previous example could have been written more compactly as follows, char chVowel[6] = "aeiou"; When the value assigned to a character array is a string (which must be enclosed in double quotes), the compiler automatically supplies the NULL character but we still have to reserve one extra place for the NULL. For unsized array (variable sized), we can lare as follow, char chName[ ] = "Mr. Dracula"; C compiler automatically creates an array which is big enough to hold all the initializer.
- 11. ARRAY Two Dimensional/2D Arrays A two dimensional array has two subscripts/indexes. The first subscript refers to the row, and the second, to the column. Its declaration has the following form, data_type array_name[1st dimension size][2nd dimension size]; For examples, int x Integer[3][4]; float matrixNum[20][25]; The first line declares xInteger as an integer array with 3 rows and 4 columns. Second line declares a matrixNum as a floating-point array with 20 rows and 25 columns.
- 12.