View Compilation Error

0_0_2611604_26861.cpp:3: error: `main' must return `int'
0_0_2611604_26861.cpp: In function `int main(...)':
0_0_2611604_26861.cpp:10: error: expected primary-expression before "float"
0_0_2611604_26861.cpp:10: error: `sqrt' undeclared (first use this function)
0_0_2611604_26861.cpp:10: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_2611604_26861.cpp:11: error: expected `;' before "printf"