chore: merge dev into master

.vscode/settings.json

@@ -3,13 +3,6 @@
     "justfile": "makefile"
   },
   "material-icon-theme.folders.associations": {
-    "C": "scripts",
-    "conditional_structures": "tasks",
-    "sequential_structures": "tasks",
-    "repetition_structures": "tasks",
-    "functions": "tasks",
-    "vectors": "tasks",
-    "matrix": "tasks",
-    "strings": "tasks"
+    "C": "scripts"
   }
 }

apps/C/pointers/1.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+
+#define LEN 10
+
+int negativos(int *vet, int len);
+
+int main() {
+  // Write C code here
+  int vet[LEN] = {-4, -2, -5, 0, -10, 2, 9, 12};
+
+  int *point = vet;
+
+  // printf("%d", point);
+
+  int num_negativos = negativos(point, LEN);
+
+  printf("Total de números negativos no array: %d\n", num_negativos);
+
+  return 0;
+}
+
+int negativos(int *vet, int len) {
+  int negativos_count = 0;
+
+  for (int i = 0; i < len; i++) {
+    if (*(vet + i) < 0) {
+      negativos_count++;
+    }
+  }
+
+  return negativos_count;
+}

apps/C/pointers/10.c

@@ -0,0 +1,17 @@
+#include <stdio.h>
+
+void main() {
+  int x, y = 0;
+  int *p = &y;
+
+  x = *p;
+  x = 10;
+  x--;
+
+  printf("%d\n", *p); // 0
+
+  *p += x;
+  printf("%d\n", y); // 9
+
+  printf("%d\n", &x == p); // False
+}

apps/C/pointers/11.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+#define PROD 30
+
+void main() {
+  float v[PROD];
+
+  for (int i = 0; i < PROD; i++) {
+    printf("Digite o valor do %dº produto: ", i + 1);
+    scanf("%f", &v[i]);
+
+    v[i] += v[i] * 0.08;
+  }
+
+  printf("Valor dos produtos:\n");
+
+  for (int i = 0; i < PROD; i++) {
+    printf("\t%.2f\n", v[i]);
+  }
+}

apps/C/pointers/12.c

@@ -0,0 +1,24 @@
+#include <stdio.h>
+
+#define MAX_LEN 100
+
+int total_words(char *str) {
+  int count = 0;
+
+  for (int i = 0; str[i] != '\0'; i++) {
+    if (str[i] == ' ') {
+      count++;
+    }
+  }
+
+  return count + 1;
+}
+
+void main() {
+  char str[MAX_LEN];
+
+  printf("Digite uma frase: ");
+  fgets(str, MAX_LEN, stdin);
+
+  printf("A frase tem %d palavras.\n", total_words(str));
+}

apps/C/pointers/2.c

@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+// int main() {
+//    int x;
+//    int* p = &x;
+//
+//    printf("Digite um número: ");
+//    scanf("%d", *p); - Scanf cannot be assigned to it value
+//
+//    printf("%d", x);
+//
+//    return 0;
+//}
+
+int main() {
+  int x;
+  int *p = &x;
+
+  printf("Digite um número: ");
+  scanf("%d", p); // Fix
+
+  printf("%d", x);
+
+  return 0;
+}

apps/C/pointers/3.c

@@ -0,0 +1,32 @@
+#include <stdio.h>
+
+#define LEN 10
+
+int get_bigger(int *vet, int length, int *pos);
+
+int main() {
+  int vet[LEN] = {0, 10, 412, 1, 529, -329, 5321, -31230, 23};
+  int *point_vet = &vet;
+  int pos = 0;
+
+  int bigger = get_bigger(point_vet, LEN, &pos);
+
+  printf("Maior número: %d\n", bigger);
+  printf("Posição no array: %d\n", pos);
+
+  return 0;
+}
+
+int get_bigger(int *vet, int len, int *pos) {
+  int bigger = 0;
+
+  for (int i = 0; i < len; i++) {
+    if (*(vet + i) > bigger) {
+      bigger = *(vet + i);
+
+      *pos = i;
+    }
+  }
+
+  return bigger;
+}

apps/C/pointers/4.c

@@ -0,0 +1,35 @@
+#include <stdio.h>
+
+#define LEN 5
+
+int find(int *vet, int len, int *less, int *bigger);
+
+void main() {
+  int vet[LEN] = {4213, 232, 3412321, 432, 5543};
+  int *point_vet = &vet;
+  int less, bigger;
+
+  find(point_vet, LEN, &less, &bigger);
+
+  printf("Menor número: %d\n", less);
+  printf("Maior número: %d\n", bigger);
+}
+
+int find(int *vet, int len, int *less, int *bigger) {
+  for (int i = 0; i < len; i++) {
+    if (i == 0) {
+      *less = *(vet + i);
+      *bigger = *(vet + i);
+    }
+
+    if (*(vet + i) > less) {
+      *less = *(vet + i);
+    }
+
+    if (*(vet + i) < bigger) {
+      *bigger = *(vet + i);
+    }
+  }
+
+  return 0;
+}

apps/C/pointers/5.c

@@ -0,0 +1,18 @@
+// (a) Syntax error
+// (b) Should be using &pf in scanf func
+// (c) Not effective lecture of f float value
+// -> (d) Effective lecture of f float value
+// (e) None of the above
+
+#include <stdio.h>
+
+int main() {
+  float f;
+  float *pf;
+
+  pf = &f;
+
+  scanf("%f", pf);
+
+  printf("%f", *pf);
+}

apps/C/pointers/6.c

@@ -0,0 +1,20 @@
+#include <stdio.h>
+
+void reverseSentence();
+
+void main() {
+  printf("Enter a frase: ");
+
+  reverseSentence();
+}
+
+void reverseSentence() {
+  char c;
+
+  scanf("%c", &c);
+
+  if (c != '\n') {
+    reverseSentence();
+    printf("%c", c);
+  }
+}

apps/C/pointers/7.c

@@ -0,0 +1,30 @@
+#include <stdio.h>
+
+#define LEN 4
+
+void main() {
+  int m[LEN][LEN];
+
+  for (int i = 0; i < LEN; i++) {
+    for (int j = 0; j < LEN; j++) {
+      printf("Digite o valor da linha %d e coluna %d: ", i + 1, j + 1);
+      scanf("%d", &m[i][j]);
+    }
+  }
+
+  int c = 0;
+  int x;
+
+  printf("Digite o valor que deseja procurar: ");
+  scanf("%d", &x);
+
+  for (int i = 0; i < LEN; i++) {
+    for (int j = 0; j < LEN; j++) {
+      if (m[i][j] == x) {
+        c++;
+      }
+    }
+  }
+
+  printf("O valor foi encontrado %d vezes\n", c);
+}

apps/C/pointers/8.c

@@ -0,0 +1,11 @@
+// y = p1 == p2       // False
+// p1 += p2           // Error
+// x = (*p1) - (*p2)  // -5
+// p1++               // Memory block address + 4
+// x = p1 || p2       // True
+
+void main() {
+  int x = 5, y = 10;
+  int *p1 = &x;
+  int *p2 = &y;
+}

apps/C/pointers/9.c

@@ -0,0 +1,10 @@
+#include <stdio.h>
+#include <string.h>
+
+void main() {
+  char v[] = "não gosto de programar!";
+
+  for (int i = 5; i < strlen(v); i++) {
+    printf("%c", *(v + i));
+  }
+}