WHERE DO I START!?
Write a mygrep program that accepts arguments: mygrep [-i] [-n] match file1 [file2] [file3] ... [filen] A grep program will look for occurences of the "match" string in the files file1, file2, ... filen. Whenever the "match" string is found, the line where it is found is printed out. The option -i tells the grep program to make its string comparisons in a case insensitive manner. The option -n tells the grep program to print out the line number in the file where the match string is found along with the file's line. For example, suppose that a file1.txt contains: one time around the block is enough for me. See me in the IS department. Assume the name of your program is mygrep, then executing the command: mygrep is file1.text will generate: file1.txt: block is enough mygrep -i -n is file1.text will generate: file1.txt:2: block is enough file1.txt:3: for me. See me in the IS department. mygrep can also process multiple files in the same command. If any of this is still confusing, please ask. HINTS: strstr, tolower . . . Consider the following tolower example: char * x="ABCDEF"; char buff; int len = strlen(x); // Note the following loop copies the null // terminator for (int i=0; i <= len; i++) buff[i] = tolower(x[i]); cout << buff<<endl;