added ws202425 courses

2023_CS50X/c/Source/agree.c

@@ -0,0 +1,20 @@
+// Logical operators
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user to agree
+    char c = get_char("Do you agree? ");
+
+    // Check whether agreed
+    if (c == 'Y' || c == 'y')
+    {
+        printf("Agreed.\n");
+    }
+    else if (c == 'N' || c == 'n')
+    {
+        printf("Not agreed.\n");
+    }
+}

2023_CS50X/c/Source/calculator0.c

@@ -0,0 +1,16 @@
+// Addition with int, allows for overflow
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    int x = get_int("x: ");
+
+    // Prompt user for y
+    int y = get_int("y: ");
+
+    // Perform addition
+    printf("%i\n", x + y);
+}

2023_CS50X/c/Source/calculator1.c

@@ -0,0 +1,16 @@
+// Addition with long
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    long x = get_long("x: ");
+
+    // Prompt user for y
+    long y = get_long("y: ");
+
+    // Perform addition
+    printf("%li\n", x + y);
+}

2023_CS50X/c/Source/calculator2.c

@@ -0,0 +1,16 @@
+// Division with longs, demonstrating truncation
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    long x = get_long("x: ");
+
+    // Prompt user for y
+    long y = get_long("y: ");
+
+    // Divide x by y
+    printf("%li\n", x / y);
+}

2023_CS50X/c/Source/calculator3.c

@@ -0,0 +1,17 @@
+// Division with longs, demonstrating truncation
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    long x = get_long("x: ");
+
+    // Prompt user for y
+    long y = get_long("y: ");
+
+    // Divide x by y
+    float z = x / y;
+    printf("%f\n", z);
+}

2023_CS50X/c/Source/calculator4.c

@@ -0,0 +1,17 @@
+// Division with longs, demonstrating type casting
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    long x = get_long("x: ");
+
+    // Prompt user for y
+    long y = get_long("y: ");
+
+    // Divide x by y
+    float z = (float) x / (float) y;
+    printf("%f\n", z);
+}

2023_CS50X/c/Source/calculator5.c

@@ -0,0 +1,17 @@
+// Division with longs, demonstrating floating-point imprecision
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    long x = get_long("x: ");
+
+    // Prompt user for y
+    long y = get_long("y: ");
+
+    // Divide x by y
+    float z = (float) x / (float) y;
+    printf("%.20f\n", z);
+}

2023_CS50X/c/Source/calculator6.c

@@ -0,0 +1,17 @@
+// Division with longs, demonstrating double
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for x
+    long x = get_long("x: ");
+
+    // Prompt user for y
+    long y = get_long("y: ");
+
+    // Divide x by y
+    double z = (double) x / (double) y;
+    printf("%.20f\n", z);
+}

2023_CS50X/c/Source/compare0.c

@@ -0,0 +1,17 @@
+// Conditionals, Boolean expressions, relational operators
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+}

2023_CS50X/c/Source/compare1.c

@@ -0,0 +1,21 @@
+// Conditionals, Boolean expressions, relational operators
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+    else
+    {
+        printf("x is not less than y\n");
+    }
+}

2023_CS50X/c/Source/compare2.c

@@ -0,0 +1,25 @@
+// Conditionals, Boolean expressions, relational operators
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+    else if (x > y)
+    {
+        printf("x is greater than y\n");
+    }
+    else if (x == y)
+    {
+        printf("x is equal to y\n");
+    }
+}

2023_CS50X/c/Source/compare3.c

@@ -0,0 +1,25 @@
+// Conditionals, Boolean expressions, relational operators
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for integers
+    int x = get_int("What's x? ");
+    int y = get_int("What's y? ");
+
+    // Compare integers
+    if (x < y)
+    {
+        printf("x is less than y\n");
+    }
+    else if (x > y)
+    {
+        printf("x is greater than y\n");
+    }
+    else
+    {
+        printf("x is equal to y\n");
+    }
+}

2023_CS50X/c/Source/countdown.c

@@ -0,0 +1,15 @@
+// Counting
+
+#include <stdbool.h>
+#include <stdio.h>
+#include <unistd.h>
+
+int main(void)
+{
+    int i = 0;
+    while (true)
+    {
+        printf("\r%i", i);
+        i++;
+    }
+}

2023_CS50X/c/Source/counter.c

@@ -0,0 +1,14 @@
+// Counting
+
+#include <stdbool.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int i = 0;
+    while (true)
+    {
+        printf("\r%i", i);
+        i++;
+    }
+}

2023_CS50X/c/Source/hello0.c

@@ -0,0 +1,8 @@
+// A program that says hello to the world
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("hello, world\n");
+}

2023_CS50X/c/Source/hello1.c

@@ -0,0 +1,10 @@
+// get_string and printf with incorrect placeholder
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    string answer = get_string("What's your name? ");
+    printf("hello, answer\n");
+}

2023_CS50X/c/Source/hello2.c

@@ -0,0 +1,10 @@
+// get_string and printf with %s
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    string answer = get_string("What's your name? ");
+    printf("hello, %s\n", answer);
+}

2023_CS50X/c/Source/mario0.c

@@ -0,0 +1,8 @@
+// Prints a row of 4 question marks
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("????\n");
+}

2023_CS50X/c/Source/mario1.c

@@ -0,0 +1,12 @@
+// Prints a row of 4 question marks with a loop
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 4; i++)
+    {
+        printf("?");
+    }
+    printf("\n");
+}

2023_CS50X/c/Source/mario2.c

@@ -0,0 +1,11 @@
+// Prints a column of 3 bricks with a loop
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        printf("#\n");
+    }
+}

2023_CS50X/c/Source/mario3.c

@@ -0,0 +1,15 @@
+// Prints a 3-by-3 grid of bricks with nested loops
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        for (int j = 0; j < 3; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}

2023_CS50X/c/Source/mario4.c

@@ -0,0 +1,16 @@
+// Prints a 3-by-3 grid of bricks with nested loops using a constant
+
+#include <stdio.h>
+
+int main(void)
+{
+    const int n = 3;
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}

2023_CS50X/c/Source/mario5.c

@@ -0,0 +1,18 @@
+// Prints an n-by-n grid of bricks with nested loops
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int n = get_int("Size: ");
+
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}

2023_CS50X/c/Source/mario6.c

@@ -0,0 +1,22 @@
+// Prints an n-by-n grid of bricks, re-prompting user for positive integer
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    int n = get_int("Size: ");
+    while (n < 1)
+    {
+        n = get_int("Size: ");
+    }
+
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}

2023_CS50X/c/Source/mario7.c

@@ -0,0 +1,25 @@
+// Prints an n-by-n grid of bricks, re-prompting user for positive integer
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Get size of grid
+    int n;
+    do
+    {
+        n = get_int("Size: ");
+    }
+    while (n < 1);
+
+    // Print grid of bricks
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}

2023_CS50X/c/Source/mario8.c

@@ -0,0 +1,36 @@
+// Prints an n-by-n grid of bricks, re-prompting user for positive integer
+
+#include <cs50.h>
+#include <stdio.h>
+
+int get_size(void);
+void print_grid(int n);
+
+int main(void)
+{
+    int n = get_size();
+    print_grid(n);
+}
+
+int get_size(void)
+{
+    int n;
+    do
+    {
+        n = get_int("Size: ");
+    }
+    while (n < 1);
+    return n;
+}
+
+void print_grid(int n)
+{
+    for (int i = 0; i < n; i++)
+    {
+        for (int j = 0; j < n; j++)
+        {
+            printf("#");
+        }
+        printf("\n");
+    }
+}

2023_CS50X/c/Source/meow0.c

@@ -0,0 +1,10 @@
+// Opportunity for better design
+
+#include <stdio.h>
+
+int main(void)
+{
+    printf("meow\n");
+    printf("meow\n");
+    printf("meow\n");
+}

2023_CS50X/c/Source/meow1.c

@@ -0,0 +1,13 @@
+// Better design
+
+#include <stdio.h>
+
+int main(void)
+{
+    int i = 0;
+    while (i < 3)
+    {
+        printf("meow\n");
+        i++;
+    }
+}

2023_CS50X/c/Source/meow2.c

@@ -0,0 +1,11 @@
+// Better design
+
+#include <stdio.h>
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        printf("meow\n");
+    }
+}

2023_CS50X/c/Source/meow3.c

@@ -0,0 +1,19 @@
+// Abstraction
+
+#include <stdio.h>
+
+void meow(void);
+
+int main(void)
+{
+    for (int i = 0; i < 3; i++)
+    {
+        meow();
+    }
+}
+
+// Meow once
+void meow(void)
+{
+    printf("meow\n");
+}

2023_CS50X/c/Source/meow4.c

@@ -0,0 +1,19 @@
+// Abstraction with parameterization
+
+#include <stdio.h>
+
+void meow(int n);
+
+int main(void)
+{
+    meow(3);
+}
+
+// Meow some number of times
+void meow(int n)
+{
+    for (int i = 0; i < n; i++)
+    {
+        printf("meow\n");
+    }
+}

2023_CS50X/c/Source/points0.c

@@ -0,0 +1,24 @@
+// Conditionals, Boolean expressions, relational operators
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for points
+    int points = get_int("How many points did you lose? ");
+
+    // Compare points against mine
+    if (points < 2)
+    {
+        printf("You lost fewer points than me.\n");
+    }
+    else if (points > 2)
+    {
+        printf("You lost more points than me.\n");
+    }
+    else if (points == 2)
+    {
+        printf("You lost the same number of points as me.\n");
+    }
+}

2023_CS50X/c/Source/points1.c

@@ -0,0 +1,24 @@
+// Design
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Prompt user for points
+    int points = get_int("How many points did you lose? ");
+
+    // Compare points against mine
+    if (points < 2)
+    {
+        printf("You lost fewer points than me.\n");
+    }
+    else if (points > 2)
+    {
+        printf("You lost more points than me.\n");
+    }
+    else
+    {
+        printf("You lost the same number of points as me.\n");
+    }
+}

2023_CS50X/c/Source/points2.c

@@ -0,0 +1,27 @@
+// Constants
+
+#include <cs50.h>
+#include <stdio.h>
+
+int main(void)
+{
+    // Number of points that I lost
+    const int MINE = 2;
+
+    // Prompt user for points
+    int points = get_int("How many points did you lose? ");
+
+    // Compare points against mine
+    if (points < MINE)
+    {
+        printf("You lost fewer points than me.\n");
+    }
+    else if (points > MINE)
+    {
+        printf("You lost more points than me.\n");
+    }
+    else
+    {
+        printf("You lost the same number of points as me.\n");
+    }
+}