View Compilation Error

0_0_9047020_30203.cpp: In function `int main()':
0_0_9047020_30203.cpp:17: error: `span' undeclared (first use this function)
0_0_9047020_30203.cpp:17: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9047020_30203.cpp:17: error: expected `)' before "style"