C and C++ Programs

This is a short example to show you how to read and write a process id to a file in linux. First the write. #include <stdio.h> #include <stdlib.h> #include <string.h> #include <unistd.h> #include <sys/types.h> int main(int argc, char **argv) { pid_t pid = getpid(); if (argc < 2) { printf("Usage: %s <filename>\n", argv[0]); exit(EXIT_FAILURE); } FILE *fp = fopen(argv[1], "w"); if (!fp) { perror("fopen"); exit(EXIT_FAILURE); } fprintf(fp, "%d\n", pid); fclose(fp); return...Read Full Story

vs traditional built. It broke down cost to the homeowner in monthly expenses. The result was less monthly cost with all expenses included ie mortgage payment, utilities, ins etc.I displayed it at the St Louis science center green expo with very positive response. Congressman Russ Carnahan saw it and asked me to send him info I did and eveyrthing stopped there . I would like to send this to DOE or whatever agengy you suggest. It can be cutomized for any region of the country. It shows the...Read Full Story

include int main () { float dol, rate, total; printf(“== One Year Interest Calculator ==\n”); printf(“Enter principal followed by interest rate.\n”); printf(“Omit the dollar sign and percent symbol.\n”) printf(“e.g. 13500.23 5.3\n”) scanf(“%f”, &dol, &rate); total = printf(“Interest earned: $ %.002f\n”, dol, rate); printf(“Ending balance: $ %.002f\n”, dol, rate) printf(“Big Money!\n”); } thats wat I have so far….please help. It’s due tomorrow. I have to ask the user for a...Read Full Story

So, this is our first C program in the blog. We first thought of creating a separate blog for C & C++ related posts, but because of the maintenance issue, we finally decided to merge it to the main blog. So, without any further here is the program. #1: What the program does: This program is a practical implementation of the data structure “ Linked List “. We use a linked list to dynamically store user input of polynomial expressions and then we add two polynomials using some simple...Read Full Story

PROGRAMS 16.Write a program to delete a specified line from a text file. In this program, user is asked for a filename he needs to change. User is also asked for the line number that is to be deleted. The filename is stored in 'filename'. The file is opened and all the data is transferred to another file except that one line the user specifies to delete. Program: Program to delete a specific line. #include <stdio.h> int main() { FILE *fp1, *fp2; //consider 40 character string to store...Read Full Story