0_0_18481085_1784.cpp: In function 'int main()':
0_0_18481085_1784.cpp:8:44: error: expected ')' before ';' token
while(scanf("%lf%lf%lf%lf",&x1,&x2,&y1,&y2);!=EOF)
^
0_0_18481085_1784.cpp:8:45: error: expected primary-expression before '!=' token
while(scanf("%lf%lf%lf%lf",&x1,&x2,&y1,&y2);!=EOF)
^
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