excel_trans.c

#include<stdio.h>
#include<math.h>

int main (int argc, char** argv) {
  char* count = argv[1];
  int d = 0;
  int ans = 0; 
  while (*(count++) != '\0');
  count -= 2;
  do {
    ans += (*count - 64) * pow(26, d) - (d - d?1:0);
    ++d;
  } while (count-- != argv[1]);
  printf("%d\n", ans);
  return 0;
}

//コメント：なぜか動く