0_0_15139290_491.cpp: In function 'int main()': 0_0_15139290_491.cpp:6:21: error: 'scamf' was not declared in this scope while(scamf("%lf",&r)!=-1); ^ 0_0_15139290_491.cpp:8:25: error: expected ')' before ';' token printf("%.2lf\n",fabs(r); ^