lab4

fourthlab.c

+/*
+#include <stdio.h> 
+/*
+int main() { 
+	int i;
+	int j;
+	for (i = 0; i < 3; i++) { 
+		printf("%d\n", i); 
+		//perform the following FOR EACH loop 
+		for (j = 0; j < 9; j++) { 
+			//perform the following FOR EACH loop 
+			printf (">>%d\n", j); 
+			
+		}
+		
+	}
+	
+	return 0; 
+}
+*/
+
+/*
+int main(){ 
+	
+	int array[3][5] = { 
+		{4, 2, 4, 2, -1}, 
+		{-3, 55, 1, 223, 2}, 
+		{2, 4, 5, 2, 1,} 
+	}; 
+	
+	
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 5; j++){ 
+			
+			printf("%d, ", array[i][j]);
+			 
+		 }
+		 printf("\n"); 
+		 
+	 }
+	 
+	 
+	 return 0; 
+ }
+ 
+*/
+
+/*
+#include <stdlib.h> 
+int main (){ 
+	int array[3][5]; 
+	
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 5; j++){ 
+			
+			array[i][j] = rand() % 500 ; 
+			
+		} 
+	} 
+	
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 5; j++){ 
+			
+			printf("%d,", array[i][j]); 
+			
+		} 
+		printf("\n"); 
+	} 
+	return 0; 
+} 
+*/
+
+/*
+#include <string.h> 
+int main(){ 
+	
+	char array[40] = "this is a string"; 
+	int breakPoint; 
+	printf("|"); 
+	for(int i = 0; i < 40; i++){ 
+		
+		printf("%c", array[i]); 
+		
+	} 
+	printf("|\n|"); 
+	printf("%s", array); 
+	printf("|"); 
+	
+	return 0; 
+}
+*/ 
+
+/*
+#include <string.h> 
+int main(){ 
+	
+	char string1[40] = "this is a string"; 
+	char string2[] = "so is this"; 
+	
+	int lenght = strlen(string1); 
+	printf("%d", lenght); 
+	strcat(string1, string2); 
+	printf("%s", string1); 
+	
+	return 0; 
+}
+*/ 
+
+/*
+#include <stdio.h>
+#include <string.h>
+int main(){
+
+	float orthogonalMatrix[6][6];
+	float initialVector[6] = {0.3, 0.4, -2, -4.4, 2.2, 3};
+	memcpy(orthogonalMatrix[0], initialVector, 6*sizeof(float));
+	float sumOfSquares;
+
+	for(int i = 1; i < 6; i++){ 
+		sumOfSquares = 0; 
+		
+		if(initialVector[i]==0){ 
+			orthogonalMatrix[i] [i - 1]= 1;
+		 
+		}
+		
+		for(int j = i ;j < 6; j++){
+			sumOfSquares += initialVector[j]*initialVector[j];
+			
+		} 
+		
+		if(sumOfSquares == 0){ 
+			for(int j = i; j < 6; j++){ 
+				orthogonalMatrix[j][j] = 1; 
+			 
+			 }
+		 
+		 } 
+		 
+		 initialVector[i - 1] = -1*sumOfSquares/initialVector[i - 1]; 
+		 
+		 memcpy(orthogonalMatrix[i], initialVector, 6*sizeof(float)); 
+		 
+		 initialVector[i - 1] = 0;
+
+	}
+
+	
+	for(int i = 0; i < 6; i++){ 
+		
+		for(int j = 0; j < 6; j++){ 
+			
+			printf("%f,", orthogonalMatrix[i][j]); 
+			
+		} 
+		
+		printf("\n");
+
+	}
+
+	
+
+	return 0;
+
+}
+
+*/  
+
+#include <stdio.h> 
+int main(){  
+	
+	int mat[3][3];
+	
+	printf("Enter your matrix\n"); 
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 3; j++){ 
+			scanf("%d", &mat[i][j]);
+		}
+	
+	}
+	
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 3; j++){ 
+			
+			printf("%d, ", mat[i][j]); 
+		} 
+		printf("\n"); 
+	} 
+	
+	int mat2[3][3]; 
+	
+	printf("Enter 2nd matrix\n"); 
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 3; j++){ 
+			scanf("%d", &mat2[i][j]);
+		}
+	
+	}
+	
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 3; j++){ 
+			
+			printf("%d, ", mat2[i][j]); 
+		} 
+		printf("\n"); 
+	}  
+	
+	int sum[3][3]; 
+	
+	printf("Sum of matrices\n"); 
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 3; j++){
+			sum[i][j] = mat[i][j] + mat2[i][j]; 
+			printf("%d\t", sum[i][j]); 
+		} 
+		printf("\n"); 
+	}
+	
+	
+	printf("Difference of matrices\n"); 
+	for(int i = 0; i < 3; i++){ 
+		for(int j = 0; j < 3; j++){  
+			printf("%d\t", mat[i][j] - mat2[i][j]);
+	} 
+	printf("\n"); 
+	
+	} 
+	
+	return 0; 
+	
+}
+	
+	
+
+	
+	
+

thirdlab.c

+#include <stdio.h> 
+/*
+int main () { 
+int score = 20; 
+int passingScore = 35; 
+
+if(score < passingScore) { 
+printf("you didn't pass"); 
+}else if (score == passingScore) { 
+printf("please beg the professor for mercy"); 
+}else{ 
+printf("you passed! go home"); 
+} 
+
+return 0; 
+
+}
+*/ 
+
+/*
+int main (){ 
+	int i = 0; 
+	int x = 2; 
+	
+	while(i < 10) { 
+		x += i;
+		x = x + i; 
+		printf("%d %d\n", x, i); 
+		i += 1 ; 
+	} 
+	
+	return 0; 
+	
+}
+
+*/ 
+
+/*
+int main () { 
+	int x; 
+	char c; 
+	float y; 
+	scanf("%d", &x); 
+	scanf("%c", &c); 
+	scanf("%f", &y); 
+	
+	printf("%d, %c, %f", x, c, y); 
+	return 0; 
+ }
+*/
+
+/* //task 1
+int main() { 
+	int array[10]; 
+	int i ; 
+	for ( i=0; i<10; i++){ 
+	array[i]= i+1; 
+	printf("%d\n", array[i]);
+	} 
+	for( i=0; i<10; i++) { 
+		 if (array[i]%2 == 0)
+		printf("%d\n", array[i]); 
+	}
+	for( i=0; i<10; i+=2){
+		if (array[i]% 2 == 1)
+		printf("%d\n", array[i]); 
+	}
+	for( i=9; i>-1; i--) { 
+		
+		printf("%d\n", array[i]);
+	}
+	return 0; 
+}
+*/
+
+int main(){
+	int x;
+	scanf("%d", &x);
+	int array[x];
+
+	int i, t1 = 0, t2 = 1, nextTerm;
+	
+for(i = 0; i < x; i++)
+{
+	array[i]= t1;
+	nextTerm = t1 + t2;
+	t1 = t2; 
+	t2 = nextTerm;
+	printf("%d\n", array[i]); 
+	
+}
+printf("\n");
+for( i=0; i<x; i++) { 
+		 if (array[i]%2 == 0)
+		printf("%d\n", array[i]); 
+}
+
+return 0;
+}
+
+