Index a pointer as if it were an array : array pointer « Array « C++ Tutorial

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C++ Tutorial » Array » array pointer

4.3.2.Index a pointer as if it were an array

#include <iostream> 

#include <cctype> 

using namespace std; 

 

int main() 

{ 

  char *p; 

  int i; 

  char str[80] = "This Is A Test"; 

 

  cout << "Original string: " << str << "\n"; 

 

  p = str;

 

  for(i = 0; p[i]; i++) { 

    if(isupper(p[i])) 

      p[i] = tolower(p[i]); 

    else if(islower(p[i])) 

      p[i] = toupper(p[i]); 

  } 

 

  cout << "Inverted-case string: " << str; 

 

  return 0; 

}

Original string: This Is A Test
Inverted-case string: tHIS iS a tEST

4.3.array pointer
	4.3.1.	Array pointer
	4.3.2.	Index a pointer as if it were an array
	4.3.3.	Use a 2-D array of pointers to create a dictionary
	4.3.4.	Output array address by using array pointer
	4.3.5.	passing array as a constant pointer
	4.3.6.	array accessed with array notation
	4.3.7.	array accessed with pointer notation
	4.3.8.	array accessed with pointer
	4.3.9.	an array of pointers to strings
	4.3.10.	Relationship between pointers and arrays

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