Which of the following command(s) can be used to check if the string "aabbcc" matches a pattern or not? Which of the following is legal directives in C? If c is a variable of type char, which one of the following statement is illegal? Assume 'A' has a ASCII code 65, c is a char type variable, so after the execution of c='A'+'6'-'3', the value of c is: To inhibit variable substitution when echoing a string, we can use Which of the following command can generate the executable file "test