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1sem/programming basics/z10/29.cpp

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+// pb_z10_29.cpp
+// Горбацевич Андрей
+#include <iostream>
+#include <vector>
+#include <cstring>
+
+#define MAX_STR 5000
+using namespace std;
+
+void strip(char*, const char*);
+char* get_string();
+void println_string(const char*);
+
+int main() {
+    char *s, *chars;
+    cout << "Input string:" << endl;
+    s = get_string();
+    cout << "Input chars:" << endl;
+    chars = get_string();
+    cout << "String before:" << endl;
+    println_string(s);
+    strip(s, chars);
+    cout << "String after:" << endl;
+    println_string(s);
+}
+
+void strip(char *s, const char *chars) {
+    int lpad = 0;
+    int fi = 0;
+    bool found;
+    do {
+        found = false;
+        char cc = *(s + fi);
+        for (size_t j = 0; j < strlen(chars); j++) {
+            if (cc == *(chars + j)) {
+                lpad += 1;
+                found = true;
+                break;
+            }
+        }
+        fi++;
+    } while(found && fi >= 0);
+    if(lpad > 0)
+    {
+        size_t i;
+        for (i = 0; i < strlen(s) - lpad; i++)
+        {
+            *(s + i) = *(s + i + lpad);
+        }
+        *(s + i) = '\0';
+    }
+
+    int rpad = 0;
+    int ei = (int)strlen(s)-1;
+    do {
+        found = false;
+        char cc = *(s + ei--);
+        for (size_t j = 0; j < strlen(chars); j++) {
+            if (cc == *(chars + j)) {
+                rpad += 1;
+                found = true;
+                *(s + ei + 1) = '\0';
+                break;
+            }
+        }
+    } while (found && ei >= 0);
+}
+
+char* get_string() {
+    int c = 0;
+    char *s = new char[MAX_STR];
+    char ch;
+    while ((ch = cin.get()) != '\n') {
+        *(s + c++) = ch;
+    }
+    *(s + c) = '\0';
+    return s;
+}
+
+void println_string(const char* s) {
+    for (size_t i = 0; i < strlen(s); i++) {
+        cout << *(s + i);
+    }
+    cout << endl;
+}