Submission #4019844

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Source Code Expand

#include <cstdio>

int a, b;

int main() {
    scanf("%d%d", &a, &b);
    printf("%d", ceil((double)a / b) * b - a);
    return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:36: error: ‘ceil’ was not declared in this scope
     printf("%d", ceil((double)a / b) * b - a);
                                    ^
./Main.cpp:6:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
     scanf("%d%d", &a, &b);
                          ^