《问题求解与程序设计C语言版》P233-复习题1

/* * letter_grade.c * * Created on: 2010-8-22 * Author: Administrator */#include <stdio.h>void letter_grade (int points, char *gradep, int *just_missedp);intmain(void){ int p; char g; int j,input; setbuf(stdout, NULL); printf("/nEnter Your Grade:");input = scanf("%d", &p);while (input){ letter_grade(p, &g, &j); printf("Output Your GradeLetter %c/n", g); printf("/nEnter Your Grade:");input = scanf("%d", &p);} return 0 ;}voidletter_grade (int points , char *gradep, int *just_missedp){ if (points > 89 && points < 101 ) { *gradep = 'A'; } else if (points > 79 && points < 90) {*gradep = 'B';if (points == 89){ *just_missedp = points; printf("miss grade %d/n", points);}else printf("/nno miss grade/n"); } else if (points > 69 && points < 80) { *gradep = 'C'; if (points == 79) { *just_missedp = points; printf("/nmiss grade %d/n", points); }else printf("/nno miss grade/n"); } else if (points > 59 && points < 70) { *gradep = 'D'; if (points == 69) { *just_missedp = points; printf("/nmiss grade %d/n", points); }else printf("/nno miss grade/n"); } else { *gradep = 'E'; if (points == 59) { *just_missedp = points; printf("/nmiss grade %d/n", points); }else printf("/nno miss grade/n"); }}