In Cpp, Write Student Details To File And Read It Back
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Write Algorithm To Update Score In Flat File.
Problem Statement: A file exists on the disk named students.dat. The file contains several records, and each record contains two fields: (1) the student’s name, and (2) the student’s score for the final exam. Design an algorithm that changes Julie Milan’s score to 100. Solution: Start Declare InFile As File Declare OutFile As File Declare Name As String Declare Score As Integer Set InFile = "students.dat" Set OutFile = "students.tmp" For Each Line From InFile Read Next Line Split Line by <Tab> Set Name = Line[0] Set Score = Line[1] If "Julie Milan" = Name Then Set Score = 100 End If Set Line = Name + "<Tab>" + Score Write Line Into OutFile End For Close InFile Close OutFile Delete InFile Rename OutFile to InFile Exit
In C, Merge Sorted Data Files Into Single Output Data File
/** * your name, * the course number, * the date the program was completed, * a brief description of theprogram. */ #include<stdio.h> int merge(const char*, const char*, const char*); int main(){ int error = merge("Data1.txt","Data2.txt","Merged.txt"); if(error){ printf("Error: File merging failed\n"); } else { printf("Success: File merged\n"); } return error; } int merge(const char* n1, const char* n2, const char* n3){ FILE *in1 = fopen(n1, "r"); if(!in1){ printf("Error: Could not read file: %s\n", n1); return 1; } FILE *in2 = fopen(n2, "r"); if(!in2){ fclose(in1); printf("Error: Could not read file: %s\n", n2); return 2; } FILE *out = fopen(n3, "w"); if(!out){ fclose(in1); fclose(in2); printf("Error: Could not write file: %s\n", n3); return 3; } int num1, num2; //until end of file whi...
Append 100 random integers to binary file with C++/Cpp programming
#include<iostream> #include<fstream> #include<cstdlib> #include<ctime> using namespace std; int main(){ ofstream out("Exercise13_13.dat", (ios::out | ios::binary | ios_base::app)); if(!out){ cerr << "Error: failed to open file!" << endl; return 1; } srand(time(0)); int num; int bytes = sizeof(int); const char *addr = reinterpret_cast<const char*>(&num); for(int i = 1; 100 >= i; i++){ num = rand() % 100; out.write(addr, bytes); } out.close(); return 0; } Download
⚡ Cpp Program 🔥 Artist album tracks #tecqmate
#include<iostream> #include<fstream> #include<string> #include<iomanip> using namespace std; int main(){ ifstream in("namedalbuminfo.txt"); if(!in){ cerr << "Failed to load input file!" << endl; return 1; } ofstream out("namedtracklist.txt"); string line; int hours, mins, sum_hrs = 0, sum_mins = 0, count = 0, diff; getline(in, line); out << "Album title: " << line << endl; getline(in, line); out << "Artist: " << line << endl; cout << "Welcome to 's tracklist generator!" << endl; out << "Tracks:" << endl; out << "--------------------------------------------------" << endl; while(!in.eof()){ count ++; getline(in, line); in >> hours >> mins; in.ignore(); out << setfill('0') << setw(2) << count; out << " - " <...
✔ C Sharp Code ⚡ Find avg per student from .csv file 🔥
using System; using System.IO; class Ex{ public static void Main(string[]args){ float avg; string line; string[]parts; using(StreamReader inf = new StreamReader("ex2.csv")){ using(StreamWriter outf = new StreamWriter("ex2-out.csv")){ while(null != (line = inf.ReadLine())){ parts = line.Split(','); avg = ((int.Parse(parts[1])+int.Parse(parts[2])+int.Parse(parts[3]))/3.0f); outf.WriteLine("{0},{1:0.00}",parts[0],avg); } } } } } Download
