C\C++\Java\Python 求字符串长度

C:

• strlen()

int main() {
    const char* str = "I love coding.";
    printf("%d", strlen(str));
    return 0;
}

C++:

• str.length() 
• str.size()

int main() {
    string str = "I love coding.";
    cout << str.length() << endl;
    cout << str.size() << endl;
    return 0;
}

Java:

• str.length()

public static void main(String[] args) {
       String str = "I love coding.";
       System.out.println(str.length());
}

Python:

• len()

str = "I love coding."
print(len(str))