CCompiler/TestProgram.c at master · jackshendrikov/CCompiler · GitHub

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int main() {
  int sum = 0;

  // This variable `a` is independent from the variable `a` used below
  int a = 10;
  for (int a = 0; a != 10; a++) {
    sum = sum + a;

    // This line does not set `a` above
    int a = 0;
  }

  if(sum != 45) return 1;

  sum = 0;
  for (a = 20; a != 80; a = a * 2) {
    sum = sum + a;
  }
  if (a != 80) return 2;
  if (sum != 60) return 3;

  sum = 0;
  for (; a != 100; ++a) {
    sum = sum + a;
  }

  if (a != 100) return 4;
  if (sum != 1790) return 5;

  sum = 0;
  for (; a != 110; ) {
    sum = sum + a;
    a++;
  }
  if (a != 110) return 6;
  if (sum != 1045) return 7;

  int count = 0;
  for (;;) {
    count++;
    if (count == 10) break;
  }
  return count;
}


//int main() {
//    do {
//        int a = 2;
//    } while (a);
//    return 0;
//}