diff --git a/c_projects/matrix_calcs/main.c b/c_projects/matrix_calcs/main.c
new file mode 100644
index 0000000..55500f8
--- /dev/null
+++ b/c_projects/matrix_calcs/main.c
@@ -0,0 +1,79 @@
+#include <stdlib.h>
+
+void add(int m, int n, double *A, double *B, double *Y) {
+	int i = 0;
+	int j = 0;
+	int test = 0;
+	for ( i = 0; i < m; i++ ){
+		for ( j = 0; j < n; j++ ){
+			test = i*n + j;
+			Y[in + j] = A[im + j] + B[i*m + j];
+		}
+	}
+
+}
+
+double vector_dot(int n, double a[], double b[]) {
+	volatile int i;
+	double sum = 0;
+	for (i=0; i<n; i++) {
+		sum += a[i]*b[i];
+	}
+	return sum;
+}
+
+
+
+void transpose(int m, int n, double *A, double *A_t) {
+	for ( int i = 0; i < m; i++ ){
+		for ( int j = 0; j < n; j++ ){
+			A_t[jm + i] = A[in + j];
+		}
+	}
+	
+}
+
+void linearcomb(int m, int n, double sa, double sb, double *A, double *B, double *Y) {
+	for ( int i = 0; i < m; i++ ){
+		for ( int j = 0; j < n; j++ ){
+			Y[in + j] = (sa * A[in + j]) + (sb * B[i*n + j]);
+		}
+	}
+}
+
+void matrix_mult(int m1, int n1m2, int n2, double *A, double *B, double *Y) {
+	for ( int i = 0; i < m1; i++ ){
+		for ( int j = 0; j < n2; j++){
+			for ( int k = 0; k < n1m2; k++ ){
+				Y[in2 + j] += A[in1m2 + k] * B[k * n2 + j];
+			}
+		}
+	}
+}
+
+int is_equal(int m, int n, double *A, double *B) {
+	for ( int i = 0; i < m; i++ ){
+		for ( int j = 0; j < n; j++ ){
+			if ( A[in + j] != B[in + j] ){
+				return 0;
+			}
+		}
+	}
+	
+	return 1;
+}
+
+double* newMatrix(int m, int n) {
+	double *mat;
+	
+	mat = (double*)malloc(mnsizeof(double));
+	
+	for ( int i = 0; i < m; i++ ){
+		for ( int j = 0; j < n; j++){
+			mat[i*n + j] = 0;
+		}
+	
+	}
+	
+	return mat;
+}
diff --git a/c_projects/test_char_pointers/another_main.c b/c_projects/test_char_pointers/another_main.c
new file mode 100644
index 0000000..6c22a5c
--- /dev/null
+++ b/c_projects/test_char_pointers/another_main.c
@@ -0,0 +1,13 @@
+#include <stdio.h>
+
+int main()
+{
+    char c = 248;
+    printf("Result when numeric character is passed: %c\n", c);
+
+ //   c = b;
+ //   printf("\nResult when non-numeric character is passed: %d", isdigit(c));
+
+    return 0;
+}
+
diff --git a/c_projects/test_char_pointers/main.c b/c_projects/test_char_pointers/main.c
new file mode 100644
index 0000000..0114ae0
--- /dev/null
+++ b/c_projects/test_char_pointers/main.c
@@ -0,0 +1,18 @@
+#include <stdio.h>
+
+int main(){
+	char *x, *y;
+	char cat_value[100];
+	x = "Hello";
+	y = "World";
+	int cat_size;
+
+	cat_size = sizeof(12 * sizeof(char));
+
+	printf("%s\n", x);
+	snprintf(cat_value, 100, "%s,%s\n", x, y);
+
+	printf("%s", cat_value);
+
+	return 0;
+}
diff --git a/c_projects/test_char_pointers/time_pg.c b/c_projects/test_char_pointers/time_pg.c
new file mode 100644
index 0000000..3869e8e
--- /dev/null
+++ b/c_projects/test_char_pointers/time_pg.c
@@ -0,0 +1,19 @@
+/* ctime example */
+#include <stdio.h>
+#include <stdint.h>
+#include <time.h>
+
+int main ()
+{
+  time_t rawtime;
+
+  time ( &rawtime );
+
+  struct tm *local = localtime(&rawtime);
+
+  printf ( "The current local time is: %04d-%02d-%02d\n", local->tm_wday, local->tm_mon + 1, local->tm_mday );
+  printf ("%d\n", 8*sizeof(int8_t*));
+  printf ("%d\n", 8*sizeof(int8_t));
+
+  return 0;
+}