View Compilation Error

0_0_8076080_19090.cpp: In function `int main()':
0_0_8076080_19090.cpp:19: error: `sacanf' undeclared (first use this function)
0_0_8076080_19090.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_8076080_19090.cpp:24: error: 'struct P' has no member named 'c'