View Compilation Error

0_0_33409011_6432.cpp: In function 'int main()':
0_0_33409011_6432.cpp:51:75: error: expected ')' before '{' token
             else if(stu1[j].num==3&&x[3]<a[3]/2||(stu1[j].num==3&&a[3]==1){
                                                                           ^
0_0_33409011_6432.cpp:80:9: error: expected primary-expression before '}' token
         }
         ^