How to Remove specific Substring in C - Step by Step Examples

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How to Remove specific Substring in C ?

Answer

To remove a specific substring from a string in C, you can use the `strstr` function.

✐ Examples

1 Remove 'World' from "Hello World"

In this example,

We include the string.h header file to access string manipulation functions.
We create a character array str with a value of "Hello World".
We then use the strstr function to find the first occurrence of the substring "World" in str.
If the substring is found, we use the memmove function to remove it.
Finally, we print the modified string str to the console.

C Program

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

int main() {
    char str[] = "Hello World";
    char *ptr = strstr(str, "World");
    if (ptr) {
        memmove(ptr, ptr + strlen("World"), strlen(ptr + strlen("World")) + 1);
    }
    printf("Modified string: %s", str);
    return 0;
}

Output

Modified string: Hello

2 Remove 'apple' from "I like apple pie"

In this example,

We include the string.h header file to access string manipulation functions.
We create a character array text with a value of "I like apple pie".
We then use the strstr function to find the first occurrence of the substring "apple" in text.
If the substring is found, we use the memmove function to remove it.
Finally, we print the modified string text to the console.

C Program

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

int main() {
    char text[] = "I like apple pie";
    char *ptr = strstr(text, "apple");
    if (ptr) {
        memmove(ptr, ptr + strlen("apple"), strlen(ptr + strlen("apple")) + 1);
    }
    printf("Modified string: %s", text);
    return 0;
}

Output

Modified string: I like  pie

Summary

In this tutorial, we learned How to Remove specific Substring in C language with well detailed examples.

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How to Remove specific Substring in C - Step by Step Examples

How to Remove specific Substring in C ?

Answer

✐ Examples

1 Remove 'World' from "Hello World"

C Program

Output

2 Remove 'apple' from "I like apple pie"

C Program

Output

Summary

More C Strings Tutorials