Question

How to use ceil in C++

Answer 1

#include <iostream>
#include <cmath>
 
int main(void) {
    float f1 = 1.1f, f2 = 1.5f, f3 = 1.6f, f4 = 1.9f, f5 = 0.01f;
 
    std::cout << ceil(f1) << "\n";
    std::cout << ceil(f2) << "\n";
    std::cout << ceil(f3) << "\n";
    std::cout << ceil(f4) << "\n";
    std::cout << ceil(f5) << "\n";

    return 0;
}
 
 
 
/*
run:
 
2
2
2
2
1
 
*/

 

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Answer 2

#include <iostream>
#include <cmath>
 
int main(void) {
    float f1 = -1.1f, f2 = -1.5f, f3 = -1.6f, f4 = -1.9f, f5 = -0.01f;
 
    std::cout << ceil(f1) << "\n";
    std::cout << ceil(f2) << "\n";
    std::cout << ceil(f3) << "\n";
    std::cout << ceil(f4) << "\n";
    std::cout << ceil(f5) << "\n";

    return 0;
}
 
 
 
/*
run:
 
-1
-1
-1
-1
-0

*/

 

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