View Compilation Error

0_0_32222119_3817.cpp: In function 'int main()':
0_0_32222119_3817.cpp:50:15: error: unable to find character literal operator 'operator""and' with 'char' argument
    if(str[i]>='0'and str[i]<='9')
               ^
0_0_32222119_3817.cpp:50:22: error: expected ')' before 'str'
    if(str[i]>='0'and str[i]<='9')
                      ^