Temperature Converter
Medium
C
Control Flow
28 views
Problem Statement
Take temperature and unit (C/F) input from user. Handle case-insensitive (c, C, f, F). If invalid unit is there then show error and re-input mango. Convert and show result upto 2 decimal places.
Input Format
A temperature value (number) and a unit (C / F, case-insensitive).
Output Format
Converted temperature value printed up to 2 decimal places.
Example
Temperature: 100 Unit: c
Temperature in Fahrenheit = 212.00
Constraints
• Temperature can be an integer or decimal
• Unit must be C, c, F, or f
• Unit must be C, c, F, or f
Concept Explanation
The program converts temperature between Celsius and Fahrenheit based on the unit entered.
Invalid unit input must be handled by showing an error and asking for input again.
Invalid unit input must be handled by showing an error and asking for input again.
Step-by-Step Explanation
1.Ask the user to enter the temperature value.
2.Ask the user to enter the unit (C/F).
3.Convert the unit to a common case (uppercase or lowercase).
4.If the unit is C or c:
• Apply formula:
F = (C × 9/5) + 32
• Print result up to 2 decimal places.
5.Else if the unit is F or f:
• Apply formula:
C = (F − 32) × 5/9
• Print result up to 2 decimal places.
6.Else (invalid unit):
• Show error message "Invalid unit entered"
• Ask the user to re-enter temperature and unit.
7.Repeat until a valid unit is entered.
2.Ask the user to enter the unit (C/F).
3.Convert the unit to a common case (uppercase or lowercase).
4.If the unit is C or c:
• Apply formula:
F = (C × 9/5) + 32
• Print result up to 2 decimal places.
5.Else if the unit is F or f:
• Apply formula:
C = (F − 32) × 5/9
• Print result up to 2 decimal places.
6.Else (invalid unit):
• Show error message "Invalid unit entered"
• Ask the user to re-enter temperature and unit.
7.Repeat until a valid unit is entered.
Concept Explanation
The program converts temperature between Celsius and Fahrenheit based on the unit entered.
Invalid unit input must be handled by showing an error and asking for input again.
Invalid unit input must be handled by showing an error and asking for input again.
Step-by-Step Explanation
1.Ask the user to enter the temperature value.
2.Ask the user to enter the unit (C/F).
3.Convert the unit to a common case (uppercase or lowercase).
4.If the unit is C or c:
• Apply formula:
F = (C × 9/5) + 32
• Print result up to 2 decimal places.
5.Else if the unit is F or f:
• Apply formula:
C = (F − 32) × 5/9
• Print result up to 2 decimal places.
6.Else (invalid unit):
• Show error message "Invalid unit entered"
• Ask the user to re-enter temperature and unit.
7.Repeat until a valid unit is entered.
2.Ask the user to enter the unit (C/F).
3.Convert the unit to a common case (uppercase or lowercase).
4.If the unit is C or c:
• Apply formula:
F = (C × 9/5) + 32
• Print result up to 2 decimal places.
5.Else if the unit is F or f:
• Apply formula:
C = (F − 32) × 5/9
• Print result up to 2 decimal places.
6.Else (invalid unit):
• Show error message "Invalid unit entered"
• Ask the user to re-enter temperature and unit.
7.Repeat until a valid unit is entered.
Input / Output Format
Input Format
A temperature value (number) and a unit (C / F, case-insensitive).
Output Format
Converted temperature value printed up to 2 decimal places.
Constraints
• Temperature can be an integer or decimal
• Unit must be C, c, F, or f
• Unit must be C, c, F, or f
Examples
Input:
Temperature: 100
Unit: c
Output:
Temperature in Fahrenheit = 212.00
Example Solution (Public)
#include <stdio.h>
int main() {
float temp, converted;
char unit;
printf("Enter temperature value: ");
scanf("%f", &temp);
while (1) {
printf("Enter unit (C/F): ");
scanf(" %c", &unit);
if (unit == 'C' || unit == 'c') {
converted = (temp * 9 / 5) + 32;
printf("Temperature in Fahrenheit: %.2f Fn", converted);
break;
}
else if (unit == 'F' || unit == 'f') {
converted = (temp - 32) * 5 / 9;
printf("Temperature in Celsius: %.2f Cn", converted);
break;
}
else {
printf("Invalid unit! Please enter C or F.n");
}
}
return 0;
}
Official Solution Code
#include <stdio.h>
int main() {
float temp, converted;
char unit;
printf("Enter temperature value: ");
scanf("%f", &temp);
while (1) {
printf("Enter unit (C/F): ");
scanf(" %c", &unit);
if (unit == 'C' || unit == 'c') {
converted = (temp * 9 / 5) + 32;
printf("Temperature in Fahrenheit: %.2f Fn", converted);
break;
}
else if (unit == 'F' || unit == 'f') {
converted = (temp - 32) * 5 / 9;
printf("Temperature in Celsius: %.2f Cn", converted);
break;
}
else {
printf("Invalid unit! Please enter C or F.n");
}
}
return 0;
}
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