[請益] 成績資料計算建檔

看板Programming作者luckycola (小可拉)時間10年前 (2015/04/13 21:34)推噓0(0推 0噓 1→)

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小弟現在才開始學C 所以想請教版上的大大目標：把一個檔案讀進來計算後在輸出成另一個檔案前遇到的問題：讀到的檔案，不知道要怎麼把它分成陣列的迴圈以下是輸入及輸出： input: Q1 Q2 Q3 Q4 MidI MidII Final A 100 90 80 100 89 99 88 B 90 90 100 100 99 100 95 C 100 90 100 70 78 78 80 D 80 90 90 100 89 99 85 E 65 72 77 68 62 70 65 F 60 55 38 62 65 60 50 G 83 77 88 76 79 72 76 output需要1和2 output1: Q1 Q2 Q3 Q4 MidI MidII Final Average: 82 80 82 83 81 84 95 Minimum: 60 54 38 62 62 60 50 Maximum: 100 90 100 100 99 100 95 output2: 成績 A B B A C B D A E C F A G B 這是目前寫出來的 #include <stdio.h> #include <stdlib.h> #include <math.h> char grade(); int main() { FILE *input_file, *output_file; char file_name[40]; char buf[100]; char *token; char mychar; int m, n, i; int row = 0, col = 0; char input[] = "C:\\Users\\Administrator\\Documents\\ Visual Studio 2013\\Projects\\parse_command_line\\ parse_command_line\\input.txt";//這是input檔案的路徑 char output[] = "output.txt"; if ((output_file = fopen(output, "w")) == NULL) { printf("Can not open %s.\n", output); return; } if ((input_file = fopen(input, "r")) == NULL) { printf("Can not open %s.\n", input); return; } else { while ((mychar = fgetc(input_file)) != EOF) { fputc(mychar, output_file); putchar(mychar); } //fclose(input_file); //fclose(output_file); } //Create two dimesion array int **ptr = (char*)malloc(row * sizeof(int)); for (int i = 0; i < row; i++) { ptr[i] = (int)malloc(sizeof(int) * col); } while (fgets(buf, sizeof(buf), input_file) != NULL) { const char *temp[8]; token = strtok(NULL, ","); strcpy(temp[0], token); token = strtok(NULL, ","); temp[1] = atoi(token); token = strtok(NULL, ","); temp[2] = atoi(token); token = strtok(NULL, ","); temp[3] = atoi(token); token = strtok(NULL, ","); temp[4] = atoi(token); token = strtok(NULL, ","); temp[5] = atoi(token); token = strtok(NULL, ","); temp[6] = atoi(token); token = strtok(NULL, ","); temp[7] = atoi(token); //printf("%s, %d, %d, %d, %d, %d, %d, %d\n", temp[0], temp[1], temp[2], temp[3], temp[4], temp[5], temp[6], temp[7]); grade(&temp[0], &temp[1], &temp[2], &temp[3], &temp[4], &temp[5], &temp[6], &temp[7]); puts(temp[0], ptr[row][col]); puts(grade, ptr[row][col++]); //move pointer to next row row++; } //Write data into output.txt for (int m = 0; m < row; m++) { int n = 0; fputs(ptr[m][n] + " " + ptr[m][n+1], output_file); } //Free array for (int i = 0; i < row; i++) { free(ptr[i]); } //Free pointer free(ptr); fclose(input_file); fclose(output_file); return 0; } //Compute character grade for student char grade(int q1, int q2, int q3, int q4, int mid1, int mid2, int final) { int total; char grade; total = 0; total = (q1 * 0.1) + (q2 * 0.1) + (q3 * 0.1) + (q4 * 0.1) + (mid1 * 0.2) + (mid2 * 0.15) + (final * 0.25); if (total >= 90) { grade = "A"; } else if (total >= 80 && total < 90) { grade = "B"; } else if (total >= 70 && total < 80) { grade = "C"; } else if (total >= 60 && total < 70) { grade = "D"; } else grade = "F"; return grade; } -- ※ 發信站: 批踢踢實業坊(ptt.cc), 來自: 73.223.26.72 ※ 文章網址: https://www.ptt.cc/bbs/Programming/M.1428932055.A.7B8.html ※ 編輯: luckycola (73.223.26.72), 04/13/2015 21:38:30