C Exercises: Converts a temperature from Centigrade to Fahrenheit

C Input Output statement and Expressions: Exercise-1 with Solution

Write a C program that convert a temperature from Centigrade to Fahrenheit.

C programming : Centigrade and Fahrenheit Temperatures :

The centigrade scale, which is also called the Celsius scale, was developed by Swedish astronomer Andres Celsius. In the centigrade scale, water freezes at 0 degrees and boils at 100 degrees. The centigrade to Fahrenheit conversion formula is:

Fahrenheit and centigrade are two temperature scales in use today. The Fahrenheit scale was developed by the German physicist Daniel Gabriel Fahrenheit . In the Fahrenheit scale, water freezes at 32 degrees and boils at 212 degrees.

C = (5/9) * (F - 32)

where F is the Fahrenheit temperature. You can also use this Web page to convert Fahrenheit temperatures to centigrade. Just enter a Fahrenheit temperature in the text box below, then click on the Convert button.

Sample Solution:

C Code:

#include <stdio.h>
float temp_f;     /* degrees fahrenheit */
float temp_c;     /* degrees centigrade */
char line_text[50];        /* a line of input */

int main() {
	printf("Input a temperature (in Centigrade): ");
	fgets(line_text, sizeof(line_text), stdin);
	sscanf(line_text, "%f", &temp_c);

	temp_f = ((9.0 / 5.0) * temp_c) + 32.0;
	printf("%f degrees Fahrenheit.\n", temp_f);

	return(0);
}

Sample Output:

Input a temperature (in Centigrade): 45                                                                       
113.000000 degrees Fahrenheit.

Flowchart:

C Programming Code Editor:

Improve this sample solution and post your code through Disqus.

Previous: C Basic Input Output Statement Exercises Home
Next: Write a C program that calculates the volume of a sphere.