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  1. #include <stdio.h>
  2.  
  3. int SumStr(const char *str) {                        // added const
  4.     int sum = 0, digit = 0;                          // removed i
  5.     while (*str) {
  6.         digit = 0;
  7.         while (*str && *str >= '0' && *str <= '9') { // swapped order of conditions
  8.             digit = digit * 10 + (*str - '0');
  9.             str++;
  10.         }
  11.         if (digit > 0) sum += digit;
  12.         else str++;                                  // added else
  13.     }
  14.     return sum;
  15. }
  16.  
  17. int main(void) {
  18.     char s[42];
  19. 	strcpy(s, "a11b3"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  20. 	strcpy(s, ""); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  21. 	strcpy(s, "4"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  22. 	strcpy(s, "42"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  23. 	strcpy(s, "f"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  24. 	strcpy(s, "fo"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  25. 	strcpy(s, "7foo"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  26. 	strcpy(s, "73foo"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  27. 	strcpy(s, "foo9"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  28. 	strcpy(s, "foo10"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  29. 	strcpy(s, "1foo8"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  30. 	strcpy(s, "12foo4"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  31. 	strcpy(s, "1foo16"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  32. 	strcpy(s, "712foo3"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  33. 	strcpy(s, "foo5bar"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  34. 	strcpy(s, "foo88bar"); printf("SumStr(\"%s\") is %d.\n", s, SumStr(s));
  35. 	return 0;
  36. }
  37.  
Success #stdin #stdout 0s 9432KB
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stdin
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Standard input is empty
stdout
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SumStr("a11b3") is 14.
SumStr("") is 0.
SumStr("4") is 4.
SumStr("42") is 42.
SumStr("f") is 0.
SumStr("fo") is 0.
SumStr("7foo") is 7.
SumStr("73foo") is 73.
SumStr("foo9") is 9.
SumStr("foo10") is 10.
SumStr("1foo8") is 9.
SumStr("12foo4") is 16.
SumStr("1foo16") is 17.
SumStr("712foo3") is 715.
SumStr("foo5bar") is 5.
SumStr("foo88bar") is 88.
https://ideone.com/Aerrh5
SumStr without isdigit
language:
C (gcc 8.3)
created:
5 years ago
visibility:
secret

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