View Compilation Error

0_0_5266158_1405.cpp: In function `int main()':
0_0_5266158_1405.cpp:5: error: `dounle' undeclared (first use this function)
0_0_5266158_1405.cpp:5: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_5266158_1405.cpp:5: error: expected `;' before "a"
0_0_5266158_1405.cpp:9: error: `a' undeclared (first use this function)
0_0_5266158_1405.cpp:9: error: `b' undeclared (first use this function)
0_0_5266158_1405.cpp:9: error: `c' undeclared (first use this function)
0_0_5266158_1405.cpp:9: error: `d' undeclared (first use this function)
0_0_5266158_1405.cpp:10: error: `sum1' undeclared (first use this function)
0_0_5266158_1405.cpp:12: error: `sum2' undeclared (first use this function)