Remove whitespace from string header and trailing

Ideas:

• Make a note of the position of the first non-empty character temp1, note the number of space_count_head and the number of trailing spaces space_count_tail.
• Total number of spaces length_new=space_count_head+space_count_tail;
• Copy the original string with the Temp1 as the starting position and the length of length_new to the source string.

The source code is as follows:

voidStripspace (CharStr[],intlength) {   if(Str==null)return; Char*temp =str; intLast = length-1; intSpace_count_head =0; intSpace_count_tail =0;  while(*temp==' ') {Space_count_head++; Temp++; }    while(str[last]==' ') {Space_count_tail++; Last--; }   intLength_new = length-space_count_head-Space_count_tail; intLen =length_new; Char*ret =str;  while(length_new>0)   {       *str++= *temp++; Length_new--; } Ret[len]=' /';}

The main function is as follows:

intMain () {CharStr[] ="Hello World"; Char*p =str; cout<<"before strip:"<<Endl; cout<<"Str is"<<Endl; cout<< Str <<Endl; cout<<"Before:strlen (str)"<< strlen (str) <<Endl; intLength =strlen (str);    Stripspace (str,length); cout<<"After strip:"<<Endl; cout<<"Str is"<<Endl; cout<< Str <<Endl; cout<<"After:strlen (str)"<< strlen (str) <<Endl; return 0;}

At first I defined the original string as: char *str = "Hello World" and found that STR could not be modified on-site in the called function, such as str[1] = ' d ' is not allowed.

Another long-time bug is the last add ' to ' on the STR, str[len]= ' ", in fact, the location of STR in the original copy of the time has been changed, this will produce a wild pointer, so should note the starting position of Str.

Remove whitespace from string header and trailing