Question

Part I: Code writing: 1. 3pts (Display matrix of numbers) Write a function that displays an n-by-n matrix using the following header: void printMatrix(int n) Each element is between (3,9), which is generated randomly. Write a test program that prompts the user to enter n and displays an n-by-n matrix. Here is a sample run: Enter n: 2 47 96

Answer 1

Code:

#include<stdio.h>
#include<stdlib.h>

void printMatrix(int n){
int i=0,j=0; //Variables for iterations
for(i=0;i<n;i++){ // Loop for n-Rows
for(j=0;j<n;j++){ // Loop for n-Columns
// We get minimum of mod 7 is 0, then 0+3 when it is 0 for "rand()%7"
// We get maximum of mod 7 is 6, then 6+3 when it is 6 for "rand()%7"
printf("%d ",(rand()%(7))+3); // Printing random number in between 3 and 9
}
printf("\n"); // Printing New line
}
}
int main(){
int n=0;
printf("Enter n: ");
scanf("%d",&n);
printMatrix(n);
return 0;
}

Screenshots:

1 #include<stdio.h> #include<stdlib.h> 4 void printMatrix(int n){ int i=0,j=0; //Variables for iterations for(i=0;i<n;i++){ // Loop for n-Rows for(j=0; j<n; j++){ // Loop for n-Columns // We get minimum of mod 7 is e, then 0+3 when it is for "rand(%7", // We get maximum of mod 7 is 6, then 6+3 when it is 6 for "rand()%7" printf("%d", (rand()%(7))+3); // Printing random number in between 3 and 9, printf("\n"); // Printing New line int main(){ int n=0; printf("Enter n: "); scanf("%d",&n); printMatrix(n); return 0; } 20 21

Output:

Enter n: 2 4 7 58