*　　Function:

*　　　　1. Replace the first oldstr with newstr in srcstr

*　　Arguments:

*　　　　IN　　:

*　　　　　　srcstr

*　　　　　　oldstr

*　　　　　　newstr

*　　　　OUT　　:

*　　　　　　srcstr

*　　Return:

*　　　　1. If find and replace one oldstr with newstr in srcstr , return 1

*　　　　2. If find no oldstr in srcstr , return 0

*　　　　3. If error (malloc return NULL) return -1

* Notes:

* 1. srcstr should be large size enough.-* Function : * 1. Replace the first oldstr with newstr in srcs tr * Arguments : * IN : srcstr oldstr * * * * newstr OUT : * srcstr * Return : * 1. If find and replace one with newstr in oldstr srcstr, return 1 * 2. If find no oldstr in srcstr. return 0 * 3. If error (malloc return NULL) RETUR n -1 * Notes : * 1. srcstr size should be large enough.