컴퓨터 프로그래밍 설계 과제#5_HW01

#include <stdio.h> #include <stdlib.h> struct person { char name[50]; char phone[20]; int pay_hour; int work_hour; int total_pay; }; int main(void) { FILE *pfile = NULL; FILE *wfile = NULL; person **p_array = NULL; pfile = fopen("input.txt", "r"); wfile = fopen("output.txt", "w"); int person_num = 0; if(pfile == NULL) { printf("파일을 읽어올 수 없습니다.\n"); exit(0); } else { fscanf(pfile, "%d", &person_num); fflush(stdin); //printf("%d\n", person_num); } p_array = (person**)malloc(sizeof(person*) * person_num); for(int i=0; i<person_num; i++) { p_array[i] = (person*)malloc(sizeof(person)); fscanf(pfile, "%s", (*p_array[i]).name); fflush(stdin); fscanf(pfile, "%s", (*p_array[i]).phone); fflush(stdin); fscanf(pfile, "%d", &((*p_array[i]).pay_hour)); fflush(stdin); fscanf(pfile, "%d", &((*p_array[i]).work_hour)); fflush(stdin); (*p_array[i]).total_pay = (*p_array[i]).pay_hour * (*p_array[i]).work_hour; /* printf("%s\n", (*p_array[i]).name); printf("%s\n", (*p_array[i]).phone); printf("%d\n", (*p_array[i]).pay_hour); printf("%d\n", (*p_array[i]).work_hour); printf("%d\n", (*p_array[i]).total_pay); */ } for(int i=0; i<person_num-1; i++) { for(int j=i+1; j<person_num; j++) { person * tmp; if((*p_array[i]).total_pay <= (*p_array[j]).total_pay) { tmp = p_array[i]; p_array[i] = p_array[j]; p_array[j] = tmp; } } } //printf("\n정렬 후\n"); fprintf(wfile, "Name Phone Working Hour pay/hour total pay\n"); for(int i=0; i<person_num; i++) { fprintf(wfile, "%s ", (*p_array[i]).name); fprintf(wfile, "%s ", (*p_array[i]).phone); fprintf(wfile, " %d ", (*p_array[i]).pay_hour); fprintf(wfile, " %d ", (*p_array[i]).work_hour); fprintf(wfile, "%d", (*p_array[i]).total_pay); fprintf(wfile, "\n"); } // 동적할당 해제 for(int i=0; i<person_num; i++) { free(p_array[i]); } free(p_array); //파일 닫기 fclose(pfile); fclose(wfile); return 0; }