DII
DevHeads IoT Integration Server•2y ago
nour_oud

Coding Challenge 1 (C)

Find the errors in this code 
float readTemperature() {
    return 25.0; 
}

void controlHeater(float currentTemperature, float setpoint, bool *heaterStatus) {
 
    float tolerance = 0.5;

    float temperatureDifference = currentTemperature - setpoint;

    if (temperatureDifference > tolerance) {
        *heaterStatus = false; 
    } else if (temperatureDifference < -tolerance) {
        *heaterStatus = true; 
    }

    printf("Current Temperature: %.2f°C, Heater Status: %s\n", currentTemperature,
           *heaterStatus ? "ON" : "OFF");
}

int main() {
    float setpoint = 22.0; 
    bool heaterStatus = false; 

    for ( i = 0; i < 10; ++i) {
        float currentTemperature = readTemperature();
        controlHeater(currentTemperature, setpoint, &heaterStatus);
        for ( delayCount = 0; delayCount < 1000000; ++delayCount) {

        }
    }

    return 0;
}) 
float readTemperature() {
    return 25.0; 
}

void controlHeater(float currentTemperature, float setpoint, bool *heaterStatus) {
 
    float tolerance = 0.5;

    float temperatureDifference = currentTemperature - setpoint;

    if (temperatureDifference > tolerance) {
        *heaterStatus = false; 
    } else if (temperatureDifference < -tolerance) {
        *heaterStatus = true; 
    }

    printf("Current Temperature: %.2f°C, Heater Status: %s\n", currentTemperature,
           *heaterStatus ? "ON" : "OFF");
}

int main() {
    float setpoint = 22.0; 
    bool heaterStatus = false; 

    for ( i = 0; i < 10; ++i) {
        float currentTemperature = readTemperature();
        controlHeater(currentTemperature, setpoint, &heaterStatus);
        for ( delayCount = 0; delayCount < 1000000; ++delayCount) {

        }
    }

    return 0;
})
3 Replies
Yash Naidu
Yash Naidu•2y ago
Upon initial analysis, the errors lie here Undeclared 'i' , Undeclared 'delayCount' , Need to include stdbool.h to recognize 'bool' type, The ending bracket int the last line ')' (maybe a typo) Always prints the temp is 25.00 C and the status as OFF as the value of temperatureDiferrence would be 3 which is greater than the tolerance.
nour_oud
nour_oudOP•2y ago
Nice, you got it
Saßì
Saßì•2y ago
Variables 'i' and delayCount in the for loop inside the main function are used without being declared. You should declare them before using them in the loop.

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