10370(1/5)
| #include <stdio.h> #include <stdlib.h> int main(){ int C = 0; // The rst line of standard input containsan integer C, // the number of test cases. scanf("%d", &C); //Each data set begins with an integer, N, // the number of people in the class (1 <= N <=1000). int N = 0; float *g; // g for grade for(int i = 0; i < C; i++){ scanf("%d", &N); g = (float*)malloc(sizeof(float) * N); float sum = 0, o_a = 0, avg = 0; // over_average for(int j = 0; j < N; j++){ scanf("%f", g + j); if(*(g + i) > 100 || *(g + i) < 0) return 1; } for(int j = 0; j < N; j++){ sum = sum + *(g + j); } avg = sum / N; for(int j = 0; j < N; j++){ if(*(g + j) > avg) o_a++; // number of students whose grade is above average } printf("%.3f%%\n", o_a / N * 100); // rounded to 3 decimal places free(g); // remember to free space } return 0; } |
10041(1/5)
| #include <stdio.h> #include <stdlib.h> int main(){ int t, r; // test cases and int *s; scanf("%d", &t); while(t--){ int d = 0; // d = distance sum scanf("%d", &r); s = (int *)malloc(sizeof(int) * r); for(int i = 0; i < r; i++){ scanf("%d", s + i); } for(int i = 0; i < r - 1; i++){ d = d + (*(s + i + 1) - *(s + i)); } printf("%d\n", d); } return 0; } |
這兩題都不難，不過我就是繼續練習malloc的應用和把該放的區域變數放在正確的位置，這樣也不用再重製一個變數的值，另外就是嘗試多寫註解，從題目的提示去下手和額外增加一些註解。
達人
