Exercise 5-14. Modify the sort program to handle a -r flag, which indicates sorting in reverse (decreasing) order. Be sure that -r works with -n. The K&R sort from Section 5.11 calls qsort with a comparison function strcmp. Adding -r requires the comparison function to negate its result. The cleanest approach: add a global flag …
C Program to demonstrate the strstr function.strstr function finds the substring in a string. strstr() returns pointer of the first occurrence of the string other wise it returns the null pointer is returned.In this program strstr returns a pointer into ‘string’ if ‘test’ is found, if not found, NULL is returned. Read more about C …
Write C programt to demonstrate strpbrk function.strpbrk function locate the first occurrence pointed by the of string s1 from the string pointed to by s2. In this program, We Turns miscellaneous field separators into just a space separating tokens for easy parsing by SSCANF. Eventually, the character separators and replacement character will be passed in …
Exercise 5-13. Write the program tail, which prints the last n lines of its input. By default, n is 10, say, but it can be changed by an optional argument, so that tail -n prints the last n lines. The program should behave rationally no matter how unreasonable the input or the value of n. …
C Program to generate sparse matrix.A sparse matrix is a matrix that allows special techniques to take advantage of the large number of zero elements.Sparse matrix is very useful in engineering field, when solving the partial differentiation equations. Read more about how to generate sparse matrix.Read more about C Programming Language . /************************************************************ You can …
Exercise 5-10. Write the program expr, which evaluates a reverse Polish expression from the command line, where each operator or operand is a separate argument. For example, expr 2 3 4 + * evaluates 2 * (3+4). The K&R RPN calculator from Chapter 4 reads from stdin. This version reads from argv instead — each …