I am trying to resize a bmp image by FACTOR times. I got the width resize working correctly but for the height I need to print each row of pixels or 'RGBTRIPLE' FACTOR number of times. I am pretty sure I have the fseek line in the right spot (marked here) I just don't know how many bytes to move it by I tried 1 I though 1 byte past the end would move the pointer to the next line but that did not work. This is for a class so please no code. Here is my code.
I am working on a bonus question for school. By using #include <iostream> and #include <string>, I need the user to input a sentence getline(cin,sentence). Move the first word of that sentence to the end.
example:
Enter a line of text. MAC101 is the class rephrased that line to read: is the class MAC101
What I have to do is write a small program in C++ to parse the symbols that are used on 5 different lines of text in each position until position 30 is reached on each line. The goal of the parsing program is to interpret the symbols (characters), if there are any per each position, on the 5 lines of text in order to output the actual data that the group of symbols represents.
My question for is this: Is there anything special from a C++ environment that should go in to something like this outside of using standard stuff like the math associated with the search algorithm that has to happen here? The symbols are located in a file, so I know I have to include "iostream" and a few other headers. But outside of header inclusions and the code necessary to iterate and streamline the search and interpretation process, am I missing anything special that I couldn't otherwise find through simple google searches?
I am trying to read a file line by line and then do something with the informations, so my method looks like this:
Code: void open_file(char *link) { FILE *file = fopen(link, "r"); if (file == NULL) { fprintf(stderr, "Could not open file. "); exit(EXIT_FAILURE);
[Code] ....
1) The first complain of valgrind is at the line where I use fgets and its telling me (invalid write of size x), but I have allocated my line to 56000 and the read line is shorter, why is there a write size error then :S?
2) at the line where I realloc where I try to shrink the space he's telling me: Address .... is 0 bytes inside a block of size 56000, But I know i need only this space so why is there a write over space error :S??
I need to read lines from one file and copy them line by line into another file using dynamic memory allocation. It compiles but gives me a seg fault. Why/How?
My objectives for this program is to open and read a file "dict.txt" which has the following data:
4 dog pepper marker teapot
It needs to rotate the inner letters one to the right so you'd end up with "mrkear" etc, and then write those words into a new file "scramble.txt" one per line.I'm having a lot of problems understanding the program. Compiling is giving me a lot of warnings/errors.
Code:
#include <stdio.h> #include <stdlib.h> #include <string.h> #define MAXW 10 //max number of words in file #define MAXS 81 //max size of string }
I need to read a text file which has various lines containing integers. I need to write those integers separately in a vector. Example, the first line of the text file contains 3 9 8 7 6 so vector[4]=3, vector[3]=9, vector[2]=8 and so on. Next read the second line 4 1 2 3 4 5 and write to another vector vector[5]=4, vector[4]=1...
I tried the code below but it will write from the second line, the whole line in one vector index.
int str; // Temp string to cout << "Read from a file!" << endl; ifstream fin("functions.txt"); // Open it up! string line; // read line count from file; assuming it's the first line getline( fin, line );
As, it can be seen from the above structure that whitespaces are not same everytime. So, to deal with this situation, i am using boost library to remove all whitespaces from the line which is being read and then try to find the name of gate and its input. My code is given below which is able to correctly find the gate names and its first input...but my code is not able to find the second, third and so on input names.
How to read a file line by line and then later access them by doing something like
Code: lines[0] //Line number one ... lines[100] //Line number one hundred and one lines[100][0] //L lines[100][1] //i lines[100][2] //n lines[100][3] //e lines[100][4] // lines[100][5] //n ...
I have an external file with one column of data. If I have a counter value let say counter =1, and counter++ and so on. How I can write such a c++ code that if the value of counter and value from the external file are same then generate an action let say cout both values i.e. value of counter and value from external file.
for more information, here is an example:
data in file(in one column): 2 6 8 9 10... value of counter : 1 2 3 4 5 6 7 8 9...
then cout values only if value of counter and value from the file is same.
Here is my code so far, but it does not seem to work;
#include<iostream> #include<fstream> using namespace std; int main() { const int SIZE = 10; //Size declaration of array int hours[SIZE]; //Array declaration
I am reading my file (20GB) line by line using boost like this
PHP Code:
boost::interprocess::file_mapping* fm = new boost::interprocess::file_mapping("E:Mountain.7z", boost::interprocess::read_only); boost::interprocess::mapped_region* mr = new boost::interprocess::mapped_region(*fm, boost::interprocess::read_only);
I am trying to get this code eventually to read in a maze file to move the smiley face around in. But right now my current snag is the yes or no to enter the for loop.
#include <iostream> #include <windows.h> #include <conio.h> #include <time.h> using namespace std; int main() { int name; char ans;
I have a .txt file which I want to read from and then write a new text file, this time with sorted lines. It is easy to sort one value, but what about sorting entire lines based on one value?
I want to sort the lines based on the FIRST value.
I wrote the below code to find the line with "abc" as my parameter to strTosearch. I expected to the line 1st line but, this function always match the 2nd line. What am I missing here?
I wanted "found" to be "abc def hgi SSS".
Code in main() String found=GetstringColSamLine("mytext.txt", "abc");
I am very new to C programming. Lets assume that the program creates a number of string separated by lines. Is it possible to fgets() the last line of the file? If yes, then how?
