View Compilation Error

0_0_28832197_31796.cpp: In function 'int main()':
0_0_28832197_31796.cpp:61:25: error: expected ')' before ';' token
   while(scanf("%s", str); && str[0] != 'E'){  
                         ^
0_0_28832197_31796.cpp:61:33: error: expected ';' before '[' token
   while(scanf("%s", str); && str[0] != 'E'){  
                                 ^
0_0_28832197_31796.cpp:61:30: error: label 'str' used but not defined
   while(scanf("%s", str); && str[0] != 'E'){  
                              ^