C Tutorial/stdlib.h/strtol

Using strtol

<source lang="cpp">#include <stdio.h>

1. include <stdlib.h>

int main() {

  const char *string = "-1234567abc"; 
  
  char *remainderPtr; 
  long x;             
  
  x = strtol( string, &remainderPtr, 0 );
  printf( "%s\"%s\"\n%s%ld\n%s\"%s\"\n%s%ld\n",
          "The original string is ", string,
          "The converted value is ", x,
          "The remainder of the original string is ", 
          remainderPtr,
          "The converted value plus 567 is ", x + 567 );
  return 0; 

}</source>

The original string is "-1234567abc"
The converted value is -1234567
The remainder of the original string is "abc"
The converted value plus 567 is -1234000