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  1. #include <stdio.h>
  2. #include <stdlib.h> // malloc
  3.  
  4. char* substr( const char* str, size_t index, size_t length )
  5. {
  6.     int i;
  7.     char* temp = (char*)malloc( length + 1 );
  8.     const char* s = str + index;
  9.     for( i = 0; i < length && s[ i ]; ++i )
  10.         temp[ i ] = s[ i ];
  11.     for( ; i < length; ++i ) temp[ i ] = ' ';
  12.     temp[ length ] = 0;
  13.     return  temp;
  14. }
  15.  
  16. int main()
  17. {
  18. 	char* str;
  19. 	puts( str = substr( "hello world", 6, 3 ) );
  20. 	free( str );
  21.  
  22. 	puts( str = substr( "hello world", 6, 10 ) );
  23. 	free( str );
  24.  
  25. 	return 0;
  26. }
Success #stdin #stdout 0s 3468KB
comments (?)
stdin 
Standard input is empty
stdout 
wor
world
https://ideone.com/6yK6Nu
substr basic
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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