How to Sort Characters in String in C - Step by Step Examples

How to Sort Characters in String in C ?

Answer

To sort characters in a string in C, you can use the qsort function from the standard library. This function provides a simple way to sort the elements of an array, which can be applied to the characters of a string.

✐ Examples

1 Sort Characters in a String

In this example,

We include the necessary headers stdio.h for input/output functions and stdlib.h for the qsort function.
We create a comparison function named compare that will be used by qsort to determine the order of the characters.
In the main function, we define a string and determine its length.
We call the qsort function, passing the string, its length, the size of each element, and the comparison function.
Finally, we print the sorted string to the standard output.

C Program

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

int compare(const void *a, const void *b) {
    return (*(char *)a - *(char *)b);
}

int main() {
    char str[] = "programming";
    int length = strlen(str);

    qsort(str, length, sizeof(char), compare);

    printf("Sorted string: %s\n", str);

    return 0;
}

Output

Sorted string: aggimmnoprr

2 Sort Another String of Characters

In this example,

We include the necessary headers stdio.h for input/output functions and stdlib.h for the qsort function.
We create a comparison function named compare that will be used by qsort to determine the order of the characters.
In the main function, we define a string and determine its length.
We call the qsort function, passing the string, its length, the size of each element, and the comparison function.
Finally, we print the sorted string to the standard output.

C Program

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

int compare(const void *a, const void *b) {
    return (*(char *)a - *(char *)b);
}

int main() {
    char str[] = "datastructure";
    int length = strlen(str);

    qsort(str, length, sizeof(char), compare);

    printf("Sorted string: %s\n", str);

    return 0;
}

Output

Sorted string: aacderrstttuu

Summary

In this tutorial, we learned How to Sort Characters in String in C language with well detailed examples.

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How to Sort Characters in String in C - Step by Step Examples

How to Sort Characters in String in C ?

Answer

✐ Examples

1 Sort Characters in a String

C Program

Output

2 Sort Another String of Characters

C Program

Output

Summary

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