View Compilation Error

0_0_17959362_22746.cpp: In function 'int main()':
0_0_17959362_22746.cpp:44:28: error: expected ')' at end of input
             if(a[i] - a[i-1] 
                            ^
0_0_17959362_22746.cpp:44:28: error: expected statement at end of input
0_0_17959362_22746.cpp:44:28: error: expected '}' at end of input
0_0_17959362_22746.cpp:44:28: error: expected '}' at end of input
0_0_17959362_22746.cpp:44:28: error: expected '}' at end of input