View Compilation Error

687283_0_0_11124.cpp: In function `int main()':
687283_0_0_11124.cpp:10: error: `tj' undeclared (first use this function)
687283_0_0_11124.cpp:10: error: (Each undeclared identifier is reported only once for each function it appears in.)
687283_0_0_11124.cpp:10: error: `memset' undeclared (first use this function)
687283_0_0_11124.cpp:11: error: `ki' undeclared (first use this function)
687283_0_0_11124.cpp:17: error: `swap' undeclared (first use this function)
687283_0_0_11124.cpp:42: error: expected `;' before '}' token