Добавить task4.cpp

ConsoleApplica44444.cpp

@@ -1,68 +0,0 @@
-#include <iostream>
-#include <fstream>
-using namespace std;
-
-int ncd(int a, int b) {
-    return (b == 0 ? a : ncd(b, a % b));
-}
-
-struct Drib {
-    int ch;
-    int zn;
-
-    void init() {
-        cout << "\nInput ch: ";
-        cin >> ch;
-        cout << "Input zn: ";
-        cin >> zn;
-        skor();
-    }
-    void skor() {
-        int d = ncd(ch, zn);
-        if (d != 0) {
-            ch /= d;
-            zn /= d;
-        }
-        
-    }
-    void print() {
-        cout << ch << "/" << zn << endl;
-    }
-};
-
-int main()
-{
-    Drib a;
-    fstream finOut;
-
-    finOut.open("info.dat", ios::binary | ios::out); //ios::out | ios::trunc);
-    if (!finOut.is_open()) {
-        cerr << "\n Error opening file(out)!!\n";
-        system("pause");
-        return 1;
-    }
-    int vUser;
-    do {
-        a.init();
-
-        finOut.write((char*)(&a), sizeof(Drib));
-        cout << "\n Create a fraction?(1/Yes 0/No) ";
-        cin >> vUser;
-    } while (vUser);
-    finOut.close();
-
-    finOut.open("info.dat", ios::binary | ios::in);
-    if (!finOut.is_open()) {
-        cerr << "\n Beta(in)!!\n";
-        system("pause");
-        return 1;
-    }
-    cout << "\nRead fractions in file:\n";
-    finOut.read((char*)(&a), sizeof(a));
-    while (finOut.good()) {
-        a.print();
-        finOut.read(reinterpret_cast<char*>(&a), sizeof(a));
-    }
-    finOut.close();
-    system("pause");
-}

FractionBinaryFile.cpp

@@ -1,127 +0,0 @@
-#include <iostream>
-#include <fstream>
-using namespace std;
-
-int ncd(int a, int b) {
-	return (b == 0 ? a : ncd(b, a % b));
-}
-
-struct Drib {
-	int ch;
-	int zn;
-
-	void init() {
-		cout << "\nInput ch: ";
-		cin >> ch;
-		cout << "Input zn: ";
-		cin >> zn;
-		skor();
-	}
-	void skor() {
-		int d = ncd(ch, zn);
-		if (d != 0) {
-			ch /= d;
-			zn /= d;
-		}
-	}
-	void print() {
-		cout << ch << "/" << zn << endl;
-	}
-
-};
-int main()
-{
-	Drib a;
-	Drib* pDrip = new Drib;
-	fstream finOut;
-
-	finOut.open("info.dat", ios::binary | ios::out);//ios::out|ios::trunc);
-	if (!finOut.is_open()) {
-		cerr << "\n Error opening file(out)!!\n";
-		system("pause");
-		return 1;
-	}
-	int vUser;
-	do {
-
-		a.init();
-		pDrip->init();
-		finOut.write((char*)pDrip, sizeof(Drib));
-		//finOut.write(reinterpret_cast<char*>(&a), sizeof(a));
-		finOut.write((char*)(&a), sizeof(Drib));
-		cout << "\n Create a fraction?(1/Yes  0/No) ";
-		cin >> vUser;
-	} while (vUser);
-	finOut.close();
-
-	/*ifstream fIn;
-	finOut.open("info.dat", ios::binary );*/
-
-	finOut.open("info.dat", ios::binary | ios::in);
-	if (!finOut.is_open()) {
-		cerr << "\n Beda(in)!!";
-		system("pause");
-		return 1;
-	}
-	cout << "\nRead fractions in file:\n";
-	finOut.read((char*)(&a), sizeof(a));//1 Drip
-	while (finOut.good()) {//!finOut.eof()
-		a.print();
-		finOut.read(reinterpret_cast<char*>(&a), sizeof(a));
-	}
-	finOut.close();
-	system("pause");
-	Drib* p;
-	finOut.open("info.dat", ios::binary | ios::in);
-	if (!finOut.is_open()) {
-		cerr << "\n Error opening file(in)!!";
-		system("pause");
-		return 1;
-	}
-	finOut.seekg(0, ios::end);//ios::beg ios::cur
-	int endpos = (int)finOut.tellg();
-	int n = endpos / sizeof(Drib);
-	cout << "\n There are  " << n << " fractions in the file\n";
-	if (n == 0) {
-		return 0;
-	}
-	finOut.seekg(0);//finOut.seekg(0, ios::beg);
-	p = new Drib[n];
-	int i = 0;
-	for (i = 0; i < n; ++i) {
-		finOut.read(reinterpret_cast<char*>(p + i), sizeof(Drib));
-	}
-
-	cout << "Counted " << i << " fractions\n";
-	for (i = 0; i < n; ++i) {
-		p[i].print();
-
-	}
-
-	//finOut.seekg(sizeof(drob)*(n-1));
-	finOut.seekg(-(streamoff)sizeof(Drib), ios::end);
-	finOut.read(reinterpret_cast<char*>(&a), sizeof(Drib));
-	cout << "\n The last fraction:\n";
-	a.print();
-	delete[] p;
-	finOut.close();
-	a.init();
-	finOut.open("info.dat", ios::binary | ios::app);
-	finOut.write((char*)(&a), sizeof(a));
-	//finOut.seekp(0, ios::end);
-	endpos = (int)finOut.tellp();
-	n = endpos / sizeof(Drib);
-	cout << "\n There are  " << n << " fractions in the file\n";
-	finOut.close();
-	finOut.open("info.dat", ios::binary | ios::in);
-	if (!finOut.is_open()) {
-		cerr << "\n Error: bad open file(in)!!";
-		system("pause");
-		return 1;
-	}
-	finOut.seekg(-(streamoff)sizeof(Drib), ios::end);
-	finOut.read(reinterpret_cast<char*>(&a), sizeof(Drib));
-	cout << "\n The last fraction:\n";
-	a.print();
-}
-

Home_Task1.cpp

@@ -1,151 +0,0 @@
-//#include <iostream>
-//#include <fstream>
-//#define N 7
-//using namespace std;
-//const int sz = 25;
-//struct Marsh {
-//    char nomer[7]
-//    char marshBegin[sz];//<2F><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-//    char marshEnd[sz];//<2F><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-//    int count;//<2F><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-//    int tm;//<2F><><EFBFBD> <20><><EFBFBD> <20><><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD><EFBFBD>
-//    void init();
-//    void show();
-//};
-//
-//int main()
-//{
-//    Marsh marsh;
-//    int vUser;
-//    ofstream fout;
-//    fout.open(".\\Data\\info.dat", ios::binary);
-//    if (!fout.is_open()) {
-//        cerr << "Error: open file(out)\n";
-//        system("pause");
-//        return 1;
-//    }
-//
-//    do {
-//        marsh.init();
-//        fout.write(reinterpret_cast<char*>(&marsh), sizeof(Marsh));
-//    } while (vUser != 0);
-//    fout.close();
-//    ifstream fin;
-//    fin.open(".\\Data\\info.dat", ios::binary);
-//    if (!fin.is_open()) {
-//        cerr << "Error: open file(in)\n";
-//        system("pause");
-//        return 1;
-//    }
-//    fin.seekg(0, ios::end);
-//    int size = (int)fin.tellg();
-//    int n = size/sizeof(M)
-//}
-//void Marsh::init() {
-//    cout << "Input nomer: ";
-//    cin.getline(nomer, N);
-//    cout << "Begin: ";
-//    cin.get(marshBegin, sz);
-//    cout << "End: ";
-//    cin.get(marshEnd, sz);
-//    cout << " count: ";
-//    cin >> tm;
-//    cin.ignore();
-//}
-//void Marsh::show() {
-//    cout << "Nomer: " << nomer
-//        << "\nBegin: " << marshBegin
-//        << "\nEnd: " << marshEnd
-//        << "\n count: " << count + 2
-//        << "\n time: " << fm << endl;
-//}
-//
-
-#include <iostream>
-#include <fstream>
-#define N 7
-using namespace std;
-const int sz = 25;
-
-struct Marsh {
-    char nomer[7];
-    char marshBegin[sz];
-    char marshEnd[sz];
-    int count;
-    int tm;//time
-    void init();
-    void show();
-};
-
-void show(Marsh* p, int n) {
-    for (int i = 0; i < n; ++i)
-        p[i].show();
-}
-
-int main()
-{
-    //".\\resFile\\infoMars.dat"
-   // Marsh marsh;
-    Marsh* pMarsh = new Marsh;
-    int vUser;
-    ofstream fout;
-    fout.open(".\\Data\\info.dat", ios::binary);//ios::out
-    if (!fout.is_open()) {
-        cerr << "Error: open file(out)\n";
-        system("pause");
-        return 1;
-    }
-
-    do {
-        /*marsh.init();
-        fout.write(reinterpret_cast<char*>(&marsh), sizeof(Marsh));*/
-        pMarsh->init();
-        fout.write(reinterpret_cast<char*>(pMarsh), sizeof(Marsh));
-        cout << "Create Marsh?(1(Yes)/0(No) ";
-        cin >> vUser;
-        cin.ignore();
-    } while (vUser != 0);
-    delete pMarsh;
-    fout.close();
-    ifstream fIn;
-    fIn.open(".\\Data\\info.dat", ios::binary);//ios::out
-    if (!fIn.is_open()) {
-        cerr << "Error: open file(out)\n";
-        system("pause");
-        return 1;
-    }
-    fIn.seekg(0, ios::end);
-    int size = (int)fIn.tellg();
-    int n = size / sizeof(Marsh);//n!=0
-    pMarsh = new Marsh[n];
-    fIn.seekg(0);
-    for (int i = 0; i < n; ++i) {
-        fIn.read(reinterpret_cast<char*>(pMarsh + i), sizeof(Marsh));
-    }
-    fIn.close();
-    show(pMarsh, n);
-    delete[] pMarsh;
-    system("pause");
-}
-void Marsh::init() {
-    cout << "Input nomer: ";
-    cin.getline(nomer, N);
-    cout << "Begin: ";
-    cin.getline(marshBegin, sz);
-    cout << "End: ";
-    cin.getline(marshEnd, sz);
-    cout << " count: ";
-    cin >> count;
-    cout << "midle time:  ";
-    cin >> tm;
-    cin.ignore();
-}
-void Marsh::show() {
-    cout << "Nomer: " << nomer
-        << "\nBegin: " << marshBegin
-        << "\n End: " << marshEnd
-        << "\n count: " << count + 2
-        << "\n time: " << tm << endl;
-}
-
-

task1.cpp

@@ -0,0 +1,21 @@
+#include <iostream>
+#define SIZE 80
+using namespace std;
+
+int main()
+{
+    char str[SIZE];
+    cout << "Input string: ";
+    cin.getline(str, SIZE);
+
+    int i = 0;
+    while (str[i] != '\0') {
+        if (str[i] == ' ') {
+            str[i] = '\t';
+        }
+        ++i;
+    }
+
+    cout << "Modified string: " << str << endl;
+    system("pause");
+}

task2.cpp

@@ -0,0 +1,53 @@
+#pragma warning(disable : 4996)
+#define SIZE 80
+#include <iostream>
+using namespace std;
+
+int mystrlen(const char* str) {
+    int len = 0;
+    for (; str[len] != '\0'; ++len) {}
+    return len;
+}
+
+char* mystrcat(char* str1, const char* str2) {
+    int i = mystrlen(str1);
+    int j;
+    for (j = 0; str2[j] != '\0'; ++j) {
+        str1[i + j] = str2[j];
+    }
+    str1[i + j] = '\0';
+    return str1;
+}
+
+char* mystrchr(char* str, char s) {
+    for (int i = 0; str[i] != '\0'; ++i) {
+        if (str[i] == s) {
+            return &str[i];
+        }
+    }
+    return 0;
+}
+
+int main() {
+    char str1[SIZE];
+    char str2[SIZE];
+    cout << "Input first string: ";
+    cin.getline(str1, SIZE);
+    cout << "Input second string: ";
+    cin.getline(str2, SIZE);
+
+    cout << "mystrlen(str1): " << mystrlen(str1) << endl;
+    cout << "mystrcat(str1, str2): " << mystrcat(str1, str2) << endl;
+
+    char ch;
+    cout << "Input char to search in str1: ";
+    cin >> ch;
+    char* f = mystrchr(str1, ch);
+    if (f) {
+        cout << "mystrchr(str1, '" << ch << "): " << f << endl;
+    }
+    else {
+        cout << "mystrchr(str1, '" << ch << "): 0" << endl;
+    }
+    system("pause");
+}

task4.cpp

@@ -0,0 +1,53 @@
+#pragma warning(disable : 4996)
+#define SIZE 80
+#include <iostream>
+using namespace std;
+
+int mystrlen(const char* str) {
+    int len = 0;
+    for (; str[len] != '\0'; ++len) {}
+    return len;
+}
+
+char* mystrcat(char* str1, const char* str2) {
+    int i = mystrlen(str1);
+    int j = mystrlen(str2);
+    for (int k = 0; k < j; ++k) {
+        str1[i + k] = str2[k];
+    }
+    str1[i + j] = '\0';
+    return str1;
+}
+
+char* mystrchr(char* str, char s) {
+    for (int i = 0; str[i] != '\0'; ++i) {
+        if (str[i] == s) {
+            return &str[i];
+        }
+    }
+    return 0;
+}
+
+int main() {
+    char str1[SIZE];
+    char str2[SIZE];
+    cout << "Input first string: ";
+    cin.getline(str1, SIZE);
+    cout << "Input second string: ";
+    cin.getline(str2, SIZE);
+
+    cout << "mystrlen(str1): " << mystrlen(str1) << endl;
+    cout << "mystrcat(str1, str2): " << mystrcat(str1, str2) << endl;
+
+    char ch;
+    cout << "Input char to search in str1: ";
+    cin >> ch;
+    char* f = mystrchr(str1, ch);
+    if (f) {
+        cout << "mystrchr(str1, '" << ch << "'): " << f << endl;
+    }
+    else {
+        cout << "mystrchr(str1, '" << ch << "'): 0" << endl;
+    }
+    system("pause");
+}