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  1. #include <stdio.h>
  2.  
  3. int sum_numbers(const char *s) {
  4.   int sum = 0, n = 0;
  5.   for ( ; s && *s; ++s) {
  6.     if ('0' <= *s && *s <= '9')
  7.       n = n * 10 + (*s - '0');
  8.     else if (n) { // complete number
  9.       sum += n;
  10.       n = 0;
  11.     }
  12.   }
  13.   return sum + n;
  14. }
  15.  
  16. int main(void) {
  17.   char buf[BUFSIZ];
  18.   if (fgets(buf, sizeof buf, stdin))
  19.     return printf("%d", sum_numbers(buf)) < 0;
  20.   return 1;
  21. }
Success #stdin #stdout 0s 4552KB
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ab12cd45e
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https://ideone.com/20GJ04
language:
C (gcc 8.3)
created:
6 years ago
visibility:
secret

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