lab5

fifthLabTask1.c

+#include <stdio.h> 
+int main () { 
+int N; 
+int i; 
+int j; 
+int swap;
+
+
+printf("Please insert array size\n"); //first part,user inputs N
+scanf("%d", &N); 
+
+
+
+int array[N]; //second part, user inputs i
+
+for (i = 0; i < N; i++){ 
+	 printf("Please insert a number\n"); 
+	 scanf("%d", &array[i]);
+ }
+for (i = 0; i < N; i++){ 
+	for (j = 0; j < N-1; j++){ 
+		 if ( array[j] < array[j + 1] ) { 
+			 swap = array[j];
+			 array[j] = array[j + 1]; 
+			 array[j + 1] = swap;
+			 
+		 }
+	}
+}
+
+
+printf("\nElements in array are: "); 
+for(j = 0; j < N; j++) 
+{ 
+	printf("%d, ", array[j]);
+}
+
+
+return 0; 
+
+}
+
+ 

fifthLabTask2.c

+#include <stdio.h>
+#include <math.h> 
+int main() { 
+ int sk;  
+ double lenght1; 
+ double lenght2;
+ double lenght; 
+ double angle, x;
+ int i, j;
+ 
+	int v[4][3] = {{1, 4, 6}, 
+		         {2, -3, 1}, 
+		         {3, 5, 0}, 
+		         {3, 1, -3}
+			    } ;
+			 
+	for (i = 0; i <= 2; i++){ 
+		for (j = i+1 ; j <= 3; j++) { 
+			
+			sk = v[i][0] * v[j][0] + v[i][1] * v[j][1] + v[i][2] * v[j][2]; 
+			lenght1 = sqrt(v[i][0] * v[i][0] + v[i][1] * v[i][1] + v[i][2] * v[i][2]); 
+			lenght2 = sqrt(v[j][0] * v[j][0] + v[j][1] * v[j][1] + v[j][2] * v[j][2]); 
+			lenght = lenght1 + lenght2;
+			angle = sk/lenght; 
+			x = acos(angle);
+			
+			printf("%lf, ", x);
+			
+			
+		}
+	} 
+	return 0; 
+	
+}
+		
+		

fifthlab.c

+#include <stdio.h> 
+int main () { 
+int N; 
+int i; 
+int j; 
+int swap;
+
+
+printf("Please insert array size\n"); //first part,user inputs N
+scanf("%d", &N); 
+
+
+
+int array[N]; //second part, user inputs i
+
+for (i = 0; i < N; i++){ 
+	 printf("Please insert a number\n"); 
+	 scanf("%d", &array[i]);
+ }
+for (i = 0; i < N; i++){ 
+	for (j = 0; j < N-1; j++){ 
+		 if ( array[j] < array[j + 1] ) { 
+			 swap = array[j];
+			 array[j] = array[j + 1]; 
+			 array[j + 1] = swap;
+			 
+		 }
+	}
+}
+
+
+printf("\nElements in array are: "); 
+for(j = 0; j < N; j++) 
+{ 
+	printf("%d, ", array[j]);
+}
+
+
+return 0; 
+
+}
+
+