Fritzing lab


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day 21 Hw

#include <iostream> #include <cmath> #include<fstream> #include<string> using namespace std; int main(void) { // fstream unknownf; // unknownf.open("unknownf.txt",ios::in | ios::out); // // if (!unknownf.is_open()) // { // cout << " File didn't open"; // } //else //{ // char word[50]; // unknownf << word; // while(unknownf.good()) // { // // } // // //unknownf.close(); //} //Declare and initialize variables.  int n; double unknown[5], known[5]={6.2,7.0,8.0,7.4,5.8}; double distance(double hand_1[5],double hand_2[5]); // Compute and print distance. for(n=0;n<5;n++) { cout << "Enter elements:" << endl; cin >> unknown[n]; } fstream unknownf; unknownf.open("unknownf.txt",ios::in | ios::out); if (!unknownf.is_open()) { cout << " File didn't open"; } else {  char word[50];  unknownf << word;  int i=...
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Day 20 HW

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Comment: Got the code to work, didn't take too long to figure out how to finish the two problems. #include <stdio.h> int a[]={1,9,3,4,7,19,35,15,20},p=0,r=9; int partition(int a[], int p, int r); void quicksort(int a[], int p, int r) { if(p < r) { int q; q = partition(a, p, r); quicksort(a, p, q); quicksort(a, q+1, r); } } int partition(int a[], int p, int r) { int i, j, pivot, temp; pivot = a[p]; i = p; j = r; while(1) { while(a[i] < pivot && a[i] != pivot) i++; while(a[j] > pivot && a[j] != pivot) j--; if(i < j) { temp = a[i]; a[i] = a[j]; a[j] = temp; } else { return j; } } } int main(void){ quicksort(a,p,r-1); printf("numbers:"); for(int k=0;k<=8;k++) { printf("\n %i",a[k]); } return 0; }
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Day_13

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Comment: I had a lot of trouble understanding how to code works for the homework, I couldn't finish all of the modifications without getting an error. So I only finished the first three modifications, which took me a long time to develop. For this lab I initially had trouble getting the speaker to change the pitch according the the change in temperature. Turns out I had an extra if statement in my program and that resolved the problem. I spent about 4 hours debugging before I found the extra if statement. Also, I used a potomieter because the speaker would make the lcd screen go crazy since without the pot there was no resistance. /* This program determines the locations of peaks in an */ /* grid of elevation data. */ #include <stdio.h> #define N 25 #define FILENAME "grid1.txt" int main(void) { /* Declare variables. */ int nrows, ncols, i, j,count=0,count_2=0; double elevation[N][N]; double valleys[N][N]; FILE *grid; /* Read information from a data fi...
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