/* File: upper1.c Print out input string in upper case. */ #include #include "genlib.h" #include "simpio.h" #include #include "strlib.h" main() { int i, n ; char c ; string str, new_str ; printf("Enter a line: ") ; str = GetLine() ; new_str = "" ; n = StringLength(str) ; for ( i = 0 ; i < n ; i++ ) { c = toupper(IthChar(str, i)) ; new_str = Concat(new_str, CharToString(c)) ; } printf("Old String: %s\n", str) ; printf("New String: %s\n", new_str) ; }