View Compilation Error

0_0_37900854_18112.cpp: In function 'int main()':
0_0_37900854_18112.cpp:42:17: error: 'sacnf' was not declared in this scope
    sacnf("%d",&x);
                 ^
0_0_37900854_18112.cpp:47:17: error: 'sacnf' was not declared in this scope
    sacnf("%d",&x);
                 ^