View Compilation Error

0_0_13054787_23225.cpp: In function `int main()':
0_0_13054787_23225.cpp:6: error: `fropen' undeclared (first use this function)
0_0_13054787_23225.cpp:6: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_13054787_23225.cpp:7: error: expected `;' before "int"
0_0_13054787_23225.cpp:9: error: `N' undeclared (first use this function)