Program is to replace every occurrence of in a string:

Program is to replace every occurrence of c1 in string with c2 and have function return the no. of replacement

int replace(char *s,char c1,char c2);

void main()

  {

   clrscr();

   char *s,c1,c2;

   int ans;

   cout<<" enter a string ";

   gets(s);

   cout<<" enter the string to be searched ";

   cin>>c1;

   cout<<" enter the string to be replaced ";

   cin>>c2;

   ans=replace(s,c1,c2);

   cout<<" the no. of replacement made "<

   cout<<" the string after replacement being made :"<

  }

int replace (char *s,char c1,char c2)

  {

  int i=0;

  int count=0;

 while(s[i]!= NULL)

    {

    if (s[i]==c1)

      {

     s[i]=c2;

     count++;

      }

     i++;

    }

 return count;

  }