View Compilation Error

0_0_18809337_1236.cpp: In function 'int main()':
0_0_18809337_1236.cpp:20:23: error: expected ')' before '[' token
                 if(&&a[j]=='y'&&a[j*i]=='r'&&a[j*i*i]=='x')
                       ^
0_0_18809337_1236.cpp:20:22: error: label 'a' used but not defined
                 if(&&a[j]=='y'&&a[j*i]=='r'&&a[j*i*i]=='x')
                      ^