string roll

[kryptkat]

18 C:\Dev-Cpp\project333 misc\cvc3roll.cpp expected primary-expression before ']' token

/* cvc3.h */

// roll string

#ifndef CVC3ROLL_H
#define CVC3ROLL_H

void rollup( char b[]) {
     for(int a; a < sizeof b ; a++ ) {
...
// roll func() 
            }
            // std::cout << b << endl ;
             }
                
         
#endif 


/* cvc3.cpp */

#include "cvc3rolle.h"
#include <iostream>

using namespace std;

int main(){
    
   char q[]  = "ababdddd test text of string for roll " ;
 
   for(int a = 0 ; a < 2 ; a++ ) {
          rollup(q[]);
           cout << q << endl;
           }

}

have tried "rollup(q)" rollup(&q) and changed .h to *q have tried

i know #define CVC3ROLL_H is diff from #include "cvc3rolle.h" .h mod several times seems not issue.

thinking cpp say

//: C03:Return.cpp
// Use of "return"
#include <iostream>
using namespace std;

char cfunc(int i) {
 ...
}

int main() {
  cout << "type an integer: ";
  int val;
  cin >> val;
  cout << cfunc(val) << endl;
} ///:~

almost same prog. mine use char while tcpp use int. and i use .h

tia any ideas ?

[cpjust]

I'd say change:

void rollup( char b[]) {

to:

void rollup( char* b ) {

or even better:

void rollup( std::string& b ) {

[kryptkat]

i tried it that way. void rollup(char *q) already. got error can not convert chr* to char**.
took suggestion did it again with same error then i removed [] in the for loop. it compiled.

ok tested it worked. i messed up the for loop function call.