.gitignore

@@ -18,15 +18,3 @@
 !k\&r/*/[0-9]*.c
 # and header files
 !k\&r/*/*.h
-
-# ---- udemy c++ .gitignore ----
-# except udemy cpp
-!udemy-cpp/
-# except chapters
-!udemy-cpp/[0-9]*/
-# except excersise solutions
-!udemy-cpp/exc[0-9]*/
-# except .cc files 
-!udemy-cpp/*/*.cc
-# except .h files
-!udemy-cpp/*/*.h

README.md

@@ -1,4 +1,3 @@
 # Solutions to varius excersises
 Solutions to varius excersises from different sources.
 - k&r - [The C Programming Language](https://en.wikipedia.org/wiki/The_C_Programming_Language)
-- udemy-cpp - [Quick Start to Modern C++ for Programmers](https://www.udemy.com/course/quick-start-to-modern-c-for-programmers/)

k&r/04-funcs-and-prog-struct/04-07.c

@@ -1,48 +0,0 @@
-#include <stdio.h>
-#include <string.h>
-
-#define MIN(A, B) ((A < B) ? (A) : (B))
-
-/* -------- INPUT WITH PUSHBACK */
-int _getchar()
-{
-    extern int buffi;
-    extern char buffer[];
-    return buffi ? buffer[--buffi] : getchar();
-}
-#undef getchar
-#define getchar() _getchar()
-
-
-/* --------- MAIN PROGRAM */
-#define SLEN 10
-void ungets(char *s);
-
-/* this program copies its input to its output,
- * if ungets wokrks as expected */
-int main()
-{
-    int i, c;
-    char s[SLEN+1];
-
-    for (i = 0; i < SLEN && (c = getchar()) != EOF; i++)
-        s[i] = c;
-    s[i] = '\0';
-
-    ungets(s);
-    while ((c = getchar()) != EOF)
-        putchar(c);
-}
-
-
-#define BUFF_SIZE 100 
-int buffi;
-char buffer[BUFF_SIZE];
-
-/* ungets: pushes string s back to input */
-void ungets(char *s)
-{
-    int i = strlen(s);
-    for (i = MIN(i, BUFF_SIZE-buffi)-1; i >= 0; i--, buffi++)
-        buffer[buffi] = s[i];
-}

k&r/04-funcs-and-prog-struct/04-08.c

@@ -1,22 +0,0 @@
-#include <stdio.h>
-
-int main()
-{
-    ;
-}
-
-/* this handles EOF as wall */
-int buffc = -1;
-
-char getch()
-{
-    char temp;
-    return (buffc < 0) ? getchar() : (temp = buffc, buffc = -1, temp);
-}
-
-void ungetch(int c)
-{
-    if (buffc >= 0)
-        printf("warning: overriding character buffer\n");
-    buffc = c;
-}

k&r/04-funcs-and-prog-struct/04-12.c

@@ -1,37 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-void itoar(char *s, int x);
-
-/* converts first arg to int, puts it to output with itoar */
-int main(int argc, char *argv[])
-{
-    if (argc < 2)
-        return 1;
-    int x = atoi(argv[1]);
-    char s[strlen(argv[1])+1];
-    itoar(s, x);
-    printf("%s\n", s);
-    return 0;
-}
-
-char * utoar(char *s, unsigned x);
-
-/* itoa: writes int x to string s in decimal
- * recursive implementation */
-void itoar(char *s, int x)
-{
-    unsigned y = (x < 0) ? *(s++) = '-', -x : x;
-    s = utoar(s, y);
-    *s = '\0';
-}
-
-/* utoar: helper for itoa */
-char * utoar(char *s, unsigned x)
-{
-    if (x / 10)
-        s = utoar(s, x / 10);
-    *s = x % 10 + '0';
-    return s+1;
-}

k&r/04-funcs-and-prog-struct/04-13.c

@@ -1,28 +0,0 @@
-#include <stdio.h>
-
-int reverse(char string[], int i);
-
-/* reverses command line argument */
-int main(int argc, char *argv[])
-{
-    if (argc < 2)
-        return 1;
-    printf("length :   %d\n", reverse(argv[1], 0));
-    printf("reversed : %s\n", argv[1]);
-    return 0;
-}
-
-/* reverse: reverses string from index i, returns length 
- * recursive implementation */
-int reverse(char s[], int i)
-{
-    if (s[i] == '\0') { /* base case */
-        return 0; 
-    }
-    int j = reverse(s, i+1);
-    if (j > i) { /* swap elements */
-        char c;
-        c = s[i], s[i] = s[j], s[j] = c;
-    }
-    return j+1;
-}

k&r/04-funcs-and-prog-struct/04-calc.c

@@ -1,4 +1,5 @@
 #include <stdio.h>
+#include <stdlib.h>
 #include <string.h>
 #include <ctype.h> 
 #include <assert.h>

k&r/04-funcs-and-prog-struct/04-glob-stack.h

@@ -1,7 +1,7 @@
 #ifndef STACK_H
 
 #define STACK_H
-#define printerr(format, ...) printf("error: " format "\n", ##__VA_ARGS__)
+#define printerr(format, ...) printf("error: " format, ##__VA_ARGS__)
 
 #define EMPTY_STACK_ERR "stack empty" 
 #define SHORT_STACK_ERR "not enough elements on stack"
@@ -10,8 +10,8 @@
 #define MAX_STACK 100
 #endif // MAX_STACK
 
-int sp = 0;
-double val[MAX_STACK];
+static int sp = 0;
+static double val[MAX_STACK];
 
 /* length: current length of stack */
 #define length() sp

k&r/04-funcs-and-prog-struct/04-qsort.c

@@ -1,43 +0,0 @@
-#include <stdio.h>
-#include <stdlib.h>
-
-void qsort_book(int v[], int left, int right);
-
-/* sorts command line arguments */
-int main(int argc, char *argv[])
-{
-    int i, v[argc-1];
-    for (i = 1; i < argc; i++)
-        v[i-1] = atoi(argv[i]);
-    qsort_book(v, 0, argc-2);
-    for (i = 0; i < argc-1; i++)
-        printf("%d ", v[i]);
-    putchar('\n');
-    return 0;
-}
-
-/* swap: swap v[i] and v[j] */
-void swap(int *v, int i, int j)
-{
-    int temp = v[i];
-    v[i] = v[j], v[j] = temp;
-}
-
-/* qsort: sort v[left]...v[right] into increasing order */
-void qsort_book(int v[], int left, int right)
-{
-    int i, last;
-
-    if (left >= right) /* do nothing if array contains */
-        return;        /* fewer than two elements */
-    swap(v, left, (left + right)/2); /* move partition elem */
-    last = left; /* to v[0] */
-
-    for (i = left+1; i <= right; i++) /* partition */
-        if (v[i] < v[left])
-            swap(v, ++last, i);
-    swap(v, left, last); /* restore partition elem */
-
-    qsort_book(v, left, last-1);
-    qsort_book(v, last+1, right);
-}

udemy-cpp/01-basics/01-ranges.cc

@@ -1,22 +0,0 @@
-#include <cstdint>
-#include <cinttypes>
-#include <iostream>
-
-/* somewhat overcomplicated, could use macros provided by cstdint */
-/* take advantage of two's complement */
-#define INT_TEST(BITS) \
-    std::int##BITS##_t i##BITS = ~(~UINT##BITS##_C(0) << (BITS-1)); \
-    std::uint##BITS##_t u##BITS = -1; \
-    std::printf("%-10s %" PRId##BITS "\n", "int"#BITS"_t" , i##BITS); \
-    std::printf("%-10s %" PRIu##BITS "\n", "uint"#BITS"_t" , u##BITS)
-
-#define BITS X(8) X(16) X(32) X(64)
-
-/* prints sizes of varius (u)intX_t types */
-int main()
-{
-    std::cout << "max values of intx_t";
-    #define X(B) std::cout << '\n'; INT_TEST(B); 
-    BITS
-    #undef X
-}

udemy-cpp/exc01/AdConstants.h

@@ -1,14 +0,0 @@
-#pragma once
-
-#include <cstdint>
-#include <cstdlib>
-
-namespace Ad
-{
-namespace Constants
-{
-
-constexpr std::int32_t EGO_VEHICLE_ID = -1;
-
-} // namespace Constants
-} // namespace Ad

udemy-cpp/exc01/AdFunctions.cc

@@ -1,47 +0,0 @@
-#include <cmath>
-#include <cstdint>
-#include <iostream>
-
-#include "AdConstants.h"
-#include "AdFunctions.h"
-
-namespace Ad
-{
-namespace Utils
-{
-
-constexpr float kph_to_mps(const float kph)
-{
-    return 0.2778 * kph;
-}
-
-} // namespace Ad::Utils
-
-namespace Data
-{
-
-Types::Vehicle init_ego_vehicle()
-{
-    return Types::Vehicle{
-        .id = Constants::EGO_VEHICLE_ID,
-        .lane = Types::Lane::Center,
-        .speed_mps = Utils::kph_to_mps(135),
-        .rel_distance_m = 0,
-        };
-}
-
-} // namespace Ad::Data
-
-namespace Visualize
-{
-
-void print_vehicle(const Types::Vehicle vehicle)
-{
-    std::cout << "Vehicle " << vehicle.id << '\n';
-    std::cout << "speed : " << vehicle.speed_mps << " m/s\n";
-    std::cout << "distance : " << vehicle.rel_distance_m << " m\n";
-}
-
-} // namespace Ad::Visualize
-
-} // namespace Ad

udemy-cpp/exc01/AdFunctions.h

@@ -1,22 +0,0 @@
-#pragma once
-
-#include "AdTypes.h"
-
-namespace Ad
-{
-namespace Utils
-{
-    constexpr float kph_to_mps(const float kph);
-} // namespace Ad::Utils
-
-namespace Data
-{
-    Types::Vehicle init_ego_vehicle();
-} // namespace Ad::Data
-
-namespace Visualize
-{
-    void print_vehicle(const Types::Vehicle vehicle);
-} // namespace Ad::Visualize
-
-} // namespace Ad

udemy-cpp/exc01/AdTypes.h

@@ -1,29 +0,0 @@
-#pragma once
-
-#include <cstdint>
-
-#include "AdConstants.h"
-
-namespace Ad
-{
-namespace Types
-{
-
-enum class Lane
-{
-    Unknown,
-    Left,
-    Center,
-    Right,
-};
-
-struct Vehicle
-{
-    std::int32_t id;
-    Lane lane;
-    double speed_mps;
-    double rel_distance_m;
-};
-
-} // namespace Ad::Types
-} // namespace Ad 

udemy-cpp/exc01/main.cc

@@ -1,14 +0,0 @@
-#include <cstring>
-#include <iostream>
-#include <numeric>
-
-#include "AdFunctions.h"
-#include "AdTypes.h"
-
-int main()
-{
-    auto ego_vehicle = Ad::Data::init_ego_vehicle();
-    Ad::Visualize::print_vehicle(ego_vehicle);
-
-    return 0;
-}