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Tutorials > C Programming > Arrays and Strings

Arrays and Strings

In C, arrays are used to store multiple values of the same data type. An array is a collection of variables of the same data type that are stored in contiguous memory locations. Arrays are useful when you need to work with multiple values of the same data type.

The general syntax for declaring an array in C is:

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data_type array_name[size];

For example, the following code declares an array of integers named numbers with 5 elements:

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int numbers[5];

You can also initialize an array when you declare it, like this:

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int numbers[5] = {1, 2, 3, 4, 5};

In C, strings are arrays of characters that are terminated by a null character ('\0'). The null character is used to indicate the end of a string.

The general syntax for declaring a string in C is:

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char string_name[size];

For example, the following code declares a string named name with 10 elements:

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char name[10];

You can also initialize a string when you declare it, like this:

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char name[10] = "John Doe";

In C, strings can be manipulated using several string functions, such as strcpy(), strcat(), and strlen().

For example, the following code uses the strcpy() function to copy one string to another:

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#include <stdio.h>
#include <string.h>

int main() {
    char src[100] = "Hello";
    char dest[100];
    strcpy(dest, src);
    printf("Destination string: %s", dest);
    return 0;
}

The output of the above program will be:

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Destination string: Hello



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