View Compilation Error

0_0_6230686_2405.cpp: In function `void search_up(int)':
0_0_6230686_2405.cpp:21: error: `min' undeclared (first use this function)
0_0_6230686_2405.cpp:21: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_6230686_2405.cpp: In function `int nextInt()':
0_0_6230686_2405.cpp:125: error: `getchar' undeclared (first use this function)
0_0_6230686_2405.cpp: In function `int main()':
0_0_6230686_2405.cpp:134: error: `scanf' undeclared (first use this function)
0_0_6230686_2405.cpp:134: error: `EOF' undeclared (first use this function)
0_0_6230686_2405.cpp:145: error: `printf' undeclared (first use this function)