View Compilation Error

0_0_28795143_7103.cpp: In function 'int main()':
0_0_28795143_7103.cpp:13:20: error: 'elseif' was not declared in this scope
    elseif(a[i]=='('){
                    ^
0_0_28795143_7103.cpp:16:4: error: 'else' without a previous 'if'
    else{
    ^