What's wrong with the 'C lang' code?

Question

QUESTION: https://www.sololearn.com/coach/22?ref=app

MY  SOLUTION IN PYTHON:

color = int(input())
price =  color  + 40.00
salesTax =  0.1 + 1
total = price * salesTax
print(round(total))
#works very  fine

MY  SOLUTION IN C:
#include <stdio.h>
#include <math.h>

int main() {
    int colorNo;
    scanf("d", &colorNo);

    float color = colorNo * 5.00;
    float price = color + 40.00;
    float salesTax = 0.1 + 1.0;

    float total = price * salesTax;
    printf("%d", ceil(total));

    return 0;
}
/* outputs 1 on every test, so what am i doing wrong? */

Answer 1

1. Missing % before conversion specifier in first scanf().

2. ceil() returns a floating-point value, you should cast that to an integer before printing it with %d, otherwise it will be interpreted in a wrong way.

3. The code you posted was littered with unknown whitespace-like characters the compiler didn't recognize.

This cleaned-up version should work:

#include <math.h>
#include <stdio.h>

int main() {
int colorNo;
scanf("%d", &colorNo);

float color = colorNo * 5.00;
float price = color + 40.00;
float salesTax = 0.1 + 1.0;

float total = price * salesTax;
printf("%d", ( int )ceil(total));

return 0;
}

Answer 2

You might also be wondering why it outputs 1 when you mismatched the format string and its parameter, in which case this can be a beneficial read:

https://stackoverflow.com/questions/7480097/what-happens-to-a-float-variable-when-d-is-used-in-a-printf