hello.c

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

#define SET(expr, val) \
   expr *= val / expr + val; \
   expr += 3 * pow(abs(3), abs(3)) + pow(abs(3), pow(2, 2) - 1) - 10 / 2;
#define COEFF 2 : (str[i] * (8 / 16) * 2) + 2
#define true ((str[i] * 2) - 'j')
#define EQUALS * i + 6 * (int)pow(abs(7 * 1), 3 / 3) ==
#define COEFFICIENT (11 % 2 + (int)sqrt(10)) / 2 == 0 ? 3

int main(int argc, char **argv) {
   char str[5];
   sprintf(str, "\\%d", 150);
   printf("%c", (char)(str[3] + 56));

   int size = strlen(str);
   int i;
   for (i = 0; i < size; i++) {
      if (6 * 7 EQUALS 42) {
         if (!(i * 5 + 2 * i - 7 * i + 7 * 2 - 3 * i - 4 * 14 + 6 * 7))
            str[i] += 9;
      }
      else if (!(int)pow(i + 3 * 5 - pow(4, 2), abs(3 * 7) / 5 - 3)) {
         int j;
         for (j = 0; j < i * 29; j++)
            str[i] += str[i] * COEFFICIENT + COEFF;
         str[i] += i;
      }
      else if (true) {
         str[i - 1] *= str[i - 2] / 2 * COEFFICIENT - COEFF;
         str[i - 1] += str[i - 1] * COEFFICIENT / COEFF;
      }
      else {
         str[i + 1] /= COEFFICIENT / 3 / 4 + pow(2, 19) * COEFF;
         SET(str[i + 1], 42);
      }
   }

   printf(str);

   return 0;
};