C PROGRAM TO DEVELOP STRING FUNCTION- strchr

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

char *my_strchr(char *string,char charecter);

int main()
{
    char str[20];
    char ch;
    char *dest;
   
    printf("enter any string:");
    gets(str);
   
    printf("enter an charecter to search in the string:");
    scanf("%c",&ch);
   
    dest=my_strchr(str,ch);
   
    if(dest==NULL)  
    printf("\nvirus");
    else
    printf("\nno virus");
   
    getch();
    return 0;
}



char *my_strchr(char *string,char charecter)
{
     while(*string!='\0' && *string!=charecter)
     {
                         string++;
                         }
                        
                         if(string==NULL)
                         return(NULL);
                         else
                         return(string);
                         }