Combined 2 codes, compiled, doesn't show numbers on serial monitor (GY91+NTC)

Using Arduino Programming Questions
1

I'm trying to make both the codes work together to print temperature and air pressure in same code, after I get that to work I'm going to plot in a formula to calculate altitude with air pressure and temperature.

The code compiled without errors, serial monitor doesn't show anything.

Here is the two codes combined:

#include <GY91.h>
double pressure;
GY91 gy91;

void setup() {
  Serial.begin(9600);
  while(!Serial);
  if (!gy91.init()) 
  Serial.println("Can't initiate");
  while(1);
  analogReadResolution(12);
}


void loop() {
  gy91.read_pressure();
  Serial.print(gy91.pressure);
  Serial.println();
  double temp_celsius;
  temp_celsius = read_temp_direct();
  Serial.print(temp_celsius);
  Serial.println();
  delay(300);
}
double read_temp_direct() {
  double R_NTC, log_NTC;
  uint16_t ARead = analogRead(A10);
  R_NTC = 4700*ARead/(4095.0-ARead);
  log_NTC = log(R_NTC/10000);
  return 1/(3.354016E-3 + 2.569850E-4*log_NTC + 2.620131E-6*log_NTC*log_NTC + 6.383091E-8*log_NTC*log_NTC*log_NTC)-273.15;
}

Here is GY91 pressure code.

#include <GY91.h>
double pressure;
GY91 gy91;

void setup() {
  Serial.begin(9600);
  while(!Serial);
  analogReadResolution(12);
  if (!gy91.init()) {
    Serial.println("Can't initiate");
    while(1);
  }
}

void loop() {
  gy91.read_pressure();
  Serial.print(gy91.pressure);
  Serial.println();
  delay(100);
}

Here is NTC temperature code.

void setup() {
  Serial.begin(9600);
  while(!Serial);
  analogReadResolution(12);
}

void loop() {
  double temp_celsius;
  temp_celsius = read_temp_direct();
  Serial.print(temp_celsius);
  Serial.println();
  delay(100);
}
double read_temp_direct() {
  double R_NTC, log_NTC;
  uint16_t ARead = analogRead(A10);
  R_NTC = 4700*ARead/(4095.0-ARead);
  log_NTC = log(R_NTC/10000);
  return 1/(3.354016E-3 + 2.569850E-4*log_NTC + 2.620131E-6*log_NTC*log_NTC + 6.383091E-8*log_NTC*log_NTC*log_NTC)-273.15;
}
2

you have an infinite loop in your setup().

    while(1);
3

gcjr:
you have an infinite loop in your setup().

    while(1);

Do we assume device init failed?

4 
// Original
  if (!gy91.init()) {
    Serial.println("Can't initiate");
    while(1);
  }

// Combined
  if (!gy91.init())
  Serial.println("Can't initiate");
  while(1);

Spot the difference.

Steve