Enter 2 positive integers lower和upper（lower≤upper≤100), please output a [lower，upper]Fahrenheit-Celsius temperature conversion table with a value range of 2 degrees Fahrenheit each time.
The calculation formula of temperature conversion:, C=5×(F−32)/9where: C represents temperature in Celsius, F represents temperature in Fahrenheit.
Input format:
Enter 2 integers in a row, each representing lower和upperthe value, separated by a space.
Output format:
The first line of output:"fahr celsius"
Then output one Fahrenheit temperature fahr(integer) and one Celsius temperature celsius(occupies 6 characters width, right-aligned, and 1 decimal place) for each line.
If the input range is illegal, " Invalid." is output .
Input example 1:
32 35
Output example 1:
fahr celsius
32 0.0
34 1.1
Input example 2:
40 30
Output example 2:
Invalid.
Code:
# include <stdio.h>
# include <stdlib.h>
int main() {
int lower,upper,fahr,i;
double celsius;
scanf("%d %d",&lower,&upper);
if (lower > upper) {
printf("Invalid.");
}else {
printf("fahr celsius\n");
for (i=lower;i<=upper;i+=2) {
celsius = 5 * (i - 32) / 9.0;
printf("%d%6.1f\n",i,celsius);
}
}
return 0;
}
Submit screenshot:
Problem-solving ideas:
In fact, the difficulty of this question lies in the output part. The loop control type is not a big problem. The
output is first to occupy 6 digits, and then it is right-aligned. Here we use it %6.1f, where the 6 before the decimal point represents the occupied width, and the default is Right-aligned, if the back is left-aligned, just add 6 in front of -it!