One Dimensional Arrays in C - C Programming Tutorial 69

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Notes for You:: One Dimensional Arrays in C - C Programming Tutorial 69
- While accessing each element in an array; if it requires only one indexor subscriptsuch an array is called 1-dimensional array.
Example: arrayName[index]

Note:
- 1D array is used to store list of values arranged in either a row or a column

Declaring a one dimensional array in C:
Syntax:
data_typearrayName[size];
Example:
int numbers[5]; // numbers is an array; which can hold 5 integer values

Note:
- implicit pointers associated with one dimensional arrays in C.
- arrayName is implicitly a pointer to the first element in the array
- i.e. arrayName returns address of the first element in the array.

- &arrayName is implicitly a pointer to the whole array.
- i.e.&arrayName returns beginning address of the whole array

Getting a value of an array element:
- We can get a value of an array element by its index.
Syntax:
arrayName[index]
Example:
printf(“%d\n”,numbers[0]); // garbage integer value

Declaring and initializing a one dimensional array:
Syntax:
data_typearrayName[size] = {list of values separated by comma};
Example:
int numbers[5] = {0, 0, 0, 0, 0};

Setting new value to an array element:
- We can set a new value to an array element using assignment operator.
Syntax:
arrayName[index]=newvalue;
Example:
numbers[0]=10;
printf(“%d\n”,numbers[0]); // 10

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