View Compilation Error

0_0_22001428_15479.cpp: In function 'int main()':
0_0_22001428_15479.cpp:31:11: error: expected primary-expression before 'if'
           if(sum>=3&&len>=8&&len<=16)
           ^
0_0_22001428_15479.cpp:33:11: error: 'else' without a previous 'if'
           else
           ^