WAP to search a character in a string

/*WAP to search a character in a string*/

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

main()
{
 char *ptr, str[50];
 int ch;
 // Input of String & character
 printf("\n Enter the String \n");
 gets(str);
 printf("\n Enter the character to search ");
 ch = getchar();
 // Searching the character
 ptr = strchr(str,ch);
 if(ptr == NULL)
  printf("\n Not Found");
 else
  printf("\n The character %c is at the position %d\n",ch,ptr-str);
 getch();
 return 0;
}

bc command for calculation in linux

bc command for calculation in linux
cmd---------

$bc

e.g---------
$bc
2+5
7 //output