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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. int ignore, consumed = -1;
  5. int a = scanf("%d%n", &ignore, &consumed);
  6. printf("%d %d\n", a, consumed);
  7. return 0;
  8. }
  9.  
Success #stdin #stdout 0s 4520KB
stdin
 x
stdout
0 -1