initial commit

.gitignore

@@ -0,0 +1 @@
+.idea

mem.c

@@ -0,0 +1,58 @@
+#include <stdio.h> // p r i n t f ( . . )
+#include <stdlib.h> // EXIT_SUCCESS
+#include <signal.h> // s i g n a l ( . . )
+#include <unistd.h> 
+
+
+struct vector {
+   double *val;
+   int size;
+};
+
+struct vector * new ( unsigned int n ){
+	struct vector* v = malloc(sizeof(struct vector));
+	v->size = n;
+	v->val = calloc(n, sizeof(double));
+	return v;
+}
+
+void printVec(struct vector* v){
+	printf("[");
+	for (int i = 0; i< v->size; i++){
+		printf("%.2f,",v->val[i]);
+	}
+	printf("]");
+}
+
+struct vector * add ( struct vector * v , struct vector * w ){
+	if (v->size != w->size) return NULL;
+	
+        struct vector *y = new(v->size);
+	for (int i = 0; i< v->size; i++){
+	    y->val[i] = v->val[i] + w->val[i];
+	}
+	return y;
+}
+
+struct vector * smul ( double s , struct vector * v ){
+	struct vector *y = new(v->size);
+	for (int i = 0; i< v->size; i++){
+	    y->val[i] = v->val[i] * s;
+	}
+	return y;
+
+}
+
+int main ( int argc , char * argv []) { 
+        struct vector *v = new(3);
+	v->val[0] = 23.0;
+	v->val[1] = 5.0;
+	
+       	struct vector *w = new(3);
+	w->val[1] = 2.0;
+	w->val[2] = 54.0;
+
+
+	printVec(smul(3.0,add(v,w)));
+	return EXIT_SUCCESS ; 
+}

sig.c

@@ -0,0 +1,38 @@
+#include <stdio.h> // p r i n t f ( . . )
+#include <stdlib.h> // EXIT_SUCCESS
+#include <signal.h> // s i g n a l ( . . )
+#include <unistd.h> 
+
+
+int signb = 1;
+
+void handler ( int signum ) { 
+	if ( signum == SIGINT ){
+	    if (signb == 1 ) 
+	   	 printf ( "Just give me a moment.\n" );
+	    else if (signb == 2)
+		 printf("I said I need a moment !\n");
+	    else {
+		 printf("Fine. I’m out of here.\n");
+		 exit(EXIT_SUCCESS);
+		}
+	    signb +=1;
+	}
+}
+
+unsigned int string_length ( char string []){
+	unsigned int i = 0;
+	while (string[i++] != '\0');
+	return i-1;
+	
+}
+
+int main ( int argc , char * argv []) { 
+	signal ( SIGINT , handler );
+       
+	while (1) {
+	       	pause();
+	       	//printf("Waiting loop resumed .\n"); 
+	}
+	return EXIT_SUCCESS ; 
+}