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  1. #include <stdio.h>
  2.  
  3. #include <stdio.h>
  4. #include <stdlib.h>
  5.  
  6. int main()
  7. {
  8. char stringnumber[]="2002200345345345";
  9. char *ptr_end;
  10. long answer;
  11.  
  12. answer=strtoul(stringnumber,&ptr_end,10);
  13. printf("the unsigned number is : %lu \n",answer);
  14. return 0;
  15. }
Success #stdin #stdout 0s 5284KB
stdin
Standard input is empty
stdout
the unsigned number is : 2002200345345345