C Program to find duplicate characters in a string
In this program, You will learn how to find duplicate characters in a string in c.
int main(){
//statement
}
![C Program to find duplicate characters in a string](https://xiith.com/wp-content/uploads/2020/08/Find-duplicate-characters-in-a-string.png)
Example: How to find duplicate characters in a string in c.
#include<stdio.h>
#include<string.h>
int main() {
int i, j, len, v = 1;
char str[100];
printf("Enter string:");
scanf("%[^\n]%*c", str);
len = strlen(str);
printf("Duplicate characters:");
for (i = 0; i < len; i++) {
for (j = i + 1; j < len; j++) {
if (str[i] == str[j]) {
if (v == 1 && str[j] != '\0') {
printf("%c", str[i]);
}
str[j] = '\0';
v++;
}
}
v = 1;
}
return 0;
}
Output:
Enter string:Xiith.com
Duplicate characters:i