View Compilation Error

0_0_4350332_3963.cpp: In function `int main()':
0_0_4350332_3963.cpp:149: error: `whilescanf' undeclared (first use this function)
0_0_4350332_3963.cpp:149: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_4350332_3963.cpp:149: error: expected `;' before ')' token