View Compilation Error

1090867_0_0_6464.cpp:11:10: invalid suffix "k" on integer constant
1090867_0_0_6464.cpp: In function `int main()':
1090867_0_0_6464.cpp:21: error: `k' undeclared (first use this function)
1090867_0_0_6464.cpp:21: error: (Each undeclared identifier is reported only once for each function it appears in.)
1090867_0_0_6464.cpp:21: error: `itoa' undeclared (first use this function)