View Compilation Error

0_0_16055940_14195.cpp: In function 'int main()':
0_0_16055940_14195.cpp:26:44: error: expected primary-expression before '<' token
                 if( ( a[i] >= 'a' && a[i] =< 'z' ) || ( a[i] >= 'A' && a[i] =< 'Z' ) || ( a[i] >= '0' && a[i] =< '9' ) )
                                            ^
0_0_16055940_14195.cpp:26:78: error: expected primary-expression before '<' token
                 if( ( a[i] >= 'a' && a[i] =< 'z' ) || ( a[i] >= 'A' && a[i] =< 'Z' ) || ( a[i] >= '0' && a[i] =< '9' ) )
                                                                              ^
0_0_16055940_14195.cpp:26:112: error: expected primary-expression before '<' token
                 if( ( a[i] >= 'a' && a[i] =< 'z' ) || ( a[i] >= 'A' && a[i] =< 'Z' ) || ( a[i] >= '0' && a[i] =< '9' ) )
                                                                                                                ^