strpbrk() Function in C

This C Program implements strpbrk() function.

Here is source code of the C Program to implement strpbrk() function. The C program is successfully compiled and run on a Linux system. The program output is also shown below.

```
/*
```

 * C Program to Implement a strpbrk() Function

```
 */
```
```
#include <stdio.h>
```
```
 
```
```
char* strpbrk(char *, char *);
```
```
 
```
```
int main()
```
```
{
```
```
    char string1[50], string2[50];
```
```
    char *pos;
```
```
 
```
```
    printf("Enter the String:\n");
```
```
    scanf(" %[^\n]s", string1);
```

    printf("\nEnter the Character Set:\n");

```
    scanf(" %[^\n]s", string2);
```
```
    pos=strpbrk(string1, string2);
```
```
    printf("%s", pos);
```
```
}
```
```
 
```

/* Locates First occurrence in string s1 of any character in string s2,

 * If a character from string s2 is found ,

 * a pointer to the character in string s1 is returned,

 * otherwise,  a NULL pointer is returned.

```
 */
```

char* strpbrk(char *string1, char *string2)

```
{
```
```
    int i, j, pos, flag = 0;
```

    for (i = 0; string1[i] != '\0';i++);

```
    pos = i;
```
```
    for (i = 0;string2[i] != '\0';i++)
```
```
    {
```

        for (j = 0;string1[j] != '\0';j++)

```
        {
```

            if (string2[i] == string1[j])

```
            {
```
```
                if (j <= pos)
```
```
                {
```
```
                    pos = j;    
```
```
                    flag = 1;    
```
```
                }
```
```
            }
```
```
         }        
```
```
    }
```
```
    if (flag == 1)
```
```
    {
```
```
        return &string1[pos];
```
```
    }
```
```
    else
```
```
    {
```
```
        return NULL;
```
```
    }
```
```
}
```

$gcc string34.c
$ a.out
Enter the String:
C programming Class
 
Enter the Character Set:
mp
programming Class

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