String Functions in C (strlen, strcpy, strcmp Explained Simply)

After learning strings in C, the next step is understanding string functions.

These functions make your work easier when dealing with text.

Let’s look at the most important ones in a simple way.

---

1. strlen() – Find Length of String

The strlen() function is used to find the length of a string.

Example:

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

int main() {
    char name[] = "Ali";
    printf("%d", strlen(name));
    return 0;
}

👉 Output: 3

---

2. strcpy() – Copy One String to Another

The strcpy() function copies one string into another.

Example:

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

int main() {
    char str1[] = "Hello";
    char str2[10];

    strcpy(str2, str1);
    printf("%s", str2);

    return 0;
}

👉 Output: Hello

---

3. strcmp() – Compare Two Strings

The strcmp() function compares two strings.

Example:

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

int main() {
    char str1[] = "Ali";
    char str2[] = "Ali";

    if(strcmp(str1, str2) == 0) {
        printf("Strings are equal");
    } else {
        printf("Strings are not equal");
    }

    return 0;
}

👉 Output: Strings are equal

---

Why These Functions Matter

These functions help you:

• Work with text easily
• Save time
• Write cleaner code

---

Final Thoughts

String functions are very useful in C programming.

Once you understand them, handling text becomes much easier.

---

Thanks for reading!