Code as shown in figure, the functions are joining together two strings, I new a new space in a child function is used to store after mosaics of string, but there was a problem in the main function to delete, how should I ask you to delete right off the application of space?

CodePudding user response:

 
Char * stringcat (char * a1, char * a2) 
{
Char * s3=new char [strlen (a1) + strlen (a2) + 1); 
Char * temp=s3; 
While (* a1! Temp++=='\ 0') {* * a1 + +; } 
While (* a2! Temp++=='\ 0') * * a2 + +; 
* temp++='\ 0'; 
Return the s3; 

} 
Int main (int arg c, char * argv []) 
{
Char * t1="ABC"; 
Char * t2="123"; 
Char * tempstr; 
Tempstr=stringcat (t1, t2); 
Printf (" % s ", tempstr); 
The delete [] tempstr; 
getchar(); 
return 0; 
} 

CodePudding user response:

Remove the const

CodePudding user response:

You have a problem of algorithm, this sentence: s3 [I + 1)='\ 0';

CodePudding user response:

In local function declarations and new space, you should be in a local function release, suggested to:
Char * s;
Char * stringCat (const char * s1, s2 const char *)
{
S=new char [strlen (a1) + strlen (a2) + 1);
.
}
Int main (int arg c, char * argv [])
{
.
The delete [] s.
}