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Strings

In C, there is no string data type. In practice, a string is an array of characters (char).

Terminating Character​

A string is an array of characters with a terminating character '\0'.

Useful Functions​

Assume that we have a string char str[]. The following function int len(char str[])calculates the length of a string. 

int len(char str[]) {
    int i;
    while(str[i] != '\0') {
        i++;
    }
    return i;
}