5.14: JavaScript Examples
- Page ID
- 10667
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Temperature
// This program displays a temperature conversion table showing Fahrenheit // temperatures from 0 to 100, in increments of 10, and the corresponding // Celsius temperatures using While, Do While, and For loops. // // References: // https://www.mathsisfun.com/temperature-conversion.html // https://en.wikibooks.org/wiki/JavaScript main(); function main() { whileLoop(); doLoop(); forLoop(); } function whileLoop() { var fahrenheit; var celsius; displayHeading(); fahrenheit = 0; while (fahrenheit <= 100) { celsius = calculateCelsius(fahrenheit); displayResult(fahrenheit, celsius); fahrenheit += 10; } output(""); } function doLoop() { var fahrenheit; var celsius; displayHeading(); fahrenheit = 0; do { celsius = calculateCelsius(fahrenheit); displayResult(fahrenheit, celsius); fahrenheit += 10; } while (fahrenheit <= 100); output(""); } function forLoop() { var fahrenheit; var celsius; displayHeading(); for (fahrenheit = 0 ; fahrenheit <= 100 ; fahrenheit += 10) { celsius = calculateCelsius(fahrenheit); displayResult(fahrenheit, celsius); } output(""); } function displayHeading() { output("F°\tC°"); } function calculateCelsius(fahrenheit) { var celsius; celsius = (fahrenheit - 32) * 5 / 9; return celsius; } function displayResult(fahrenheit, celsius) { output(fahrenheit.toString() + "\t" + celsius.toString()); } // Checks the JavaScript environment and writes to the console, // the current document, or standard output as appropriate. // Reference: http://progopedia.com/example/hello-world/114/ function output(text) { if (typeof console === 'object') { console.log(text); } else if (typeof document === 'object') { document.write(text); } else { print(text); } }
Output
F° C° 0 -17.77777777777778 10 -12.222222222222221 20 -6.666666666666667 30 -1.1111111111111112 40 4.444444444444445 50 10 60 15.555555555555555 70 21.11111111111111 80 26.666666666666668 90 32.22222222222222 100 37.77777777777778 F° C° 0 -17.77777777777778 10 -12.222222222222221 20 -6.666666666666667 30 -1.1111111111111112 40 4.444444444444445 50 10 60 15.555555555555555 70 21.11111111111111 80 26.666666666666668 90 32.22222222222222 100 37.77777777777778 F° C° 0 -17.77777777777778 10 -12.222222222222221 20 -6.666666666666667 30 -1.1111111111111112 40 4.444444444444445 50 10 60 15.555555555555555 70 21.11111111111111 80 26.666666666666668 90 32.22222222222222 100 37.77777777777778
References
- Wikiversity: Computer Programming