Commit | Line | Data |
---|---|---|
010c11ea KT |
1 | #include <signal.h> |
2 | ||
3 | #define MAX 100 | |
4 | ||
5 | char types[10]; | |
6 | int right[MAX]; | |
7 | int left[MAX]; | |
8 | int rights; | |
9 | int wrongs; | |
10 | long stvec; | |
11 | long etvec; | |
12 | long dtvec; | |
13 | ||
14 | main(argc,argv) | |
15 | char *argv[]; | |
16 | { | |
17 | int range, k, dif, l; | |
18 | char line[100]; | |
19 | int ans,pans,i,j,t; | |
20 | extern delete(); | |
21 | ||
22 | signal(SIGINT, delete); | |
23 | ||
24 | range = 11; | |
25 | dif = 0; | |
26 | while(argc > 1) { | |
27 | switch(*argv[1]) { | |
28 | case '+': | |
29 | case '-': | |
30 | case 'x': | |
31 | case '/': | |
32 | while(types[dif] = argv[1][dif]) | |
33 | dif++; | |
34 | break; | |
35 | ||
36 | default: | |
37 | range = getnum(argv[1]) + 1; | |
38 | } | |
39 | argv++; | |
40 | argc--; | |
41 | } | |
42 | if(range > MAX) { | |
43 | printf("Range is too large.\n"); | |
44 | exit(0); | |
45 | } | |
46 | ||
47 | if(dif == 0) { | |
48 | types[0] = '+'; | |
49 | types[1] = '-'; | |
50 | dif = 2; | |
51 | } | |
52 | ||
53 | for(i = 0; i < range; i++) { | |
54 | left[i] = right[i] = i; | |
55 | } | |
56 | time(&stvec); | |
57 | k = stvec; | |
58 | srand(k); | |
59 | k = 0; | |
60 | l = 0; | |
61 | goto start; | |
62 | ||
63 | loop: | |
64 | if(++k%20 == 0) | |
65 | score(); | |
66 | ||
67 | start: | |
68 | i = skrand(range); | |
69 | j = skrand(range); | |
70 | if(dif > 1) | |
71 | l = random(dif); | |
72 | ||
73 | switch(types[l]) { | |
74 | case '+': | |
75 | default: | |
76 | ans = left[i] + right[j]; | |
77 | printf("%d + %d = ", left[i], right[j]); | |
78 | break; | |
79 | ||
80 | case '-': | |
81 | t = left[i] + right[j]; | |
82 | ans = left[i]; | |
83 | printf("%d - %d = ", t, right[j]); | |
84 | break; | |
85 | ||
86 | case 'x': | |
87 | ans = left[i] * right[j]; | |
88 | printf("%d x %d = ", left[i], right[j]); | |
89 | break; | |
90 | ||
91 | case '/': | |
92 | while(right[j] == 0) | |
93 | j = random(range); | |
94 | t = left[i] * right[j] + random(right[j]); | |
95 | ans = left[i]; | |
96 | printf("%d / %d = ", t, right[j]); | |
97 | break; | |
98 | } | |
99 | ||
100 | ||
101 | loop1: | |
102 | getline(line); | |
103 | dtvec += etvec - stvec; | |
104 | if(line[0]=='\n') goto loop1; | |
105 | pans = getnum(line); | |
106 | if(pans == ans) { | |
107 | printf("Right!\n"); | |
108 | rights++; | |
109 | goto loop; | |
110 | } | |
111 | else { | |
112 | printf("What?\n"); | |
113 | wrongs++; | |
114 | if(range >= MAX) goto loop1; | |
115 | left[range] = left[i]; | |
116 | right[range++] = right[j]; | |
117 | goto loop1; | |
118 | } | |
119 | } | |
120 | ||
121 | getline(s) | |
122 | char *s; | |
123 | { | |
124 | register char *rs; | |
125 | ||
126 | rs = s; | |
127 | ||
128 | while((*rs = getchar()) == ' '); | |
129 | while(*rs != '\n') | |
130 | if(*rs == 0) | |
131 | exit(0); | |
132 | else if(rs >= &s[99]) { | |
133 | while((*rs = getchar()) != '\n') | |
134 | if(*rs == '\0') exit(0); | |
135 | } | |
136 | else | |
137 | *++rs = getchar(); | |
138 | while(*--rs == ' ') | |
139 | *rs = '\n'; | |
140 | } | |
141 | ||
142 | getnum(s) | |
143 | char *s; | |
144 | { | |
145 | int a; | |
146 | char c; | |
147 | ||
148 | a = 0; | |
149 | while((c = *s++) >= '0' && c <= '9') { | |
150 | a = a*10 + c - '0'; | |
151 | } | |
152 | return(a); | |
153 | } | |
154 | ||
155 | ||
156 | random(range) | |
157 | { | |
158 | return(rand()%range); | |
159 | } | |
160 | ||
161 | skrand(range){ | |
162 | int temp; | |
163 | temp = random(range) + random(range); | |
164 | if(temp > range - 1) temp = 2*range - 1 - temp; | |
165 | return(temp); | |
166 | } | |
167 | ||
168 | score() | |
169 | { | |
170 | time(&etvec); | |
171 | ||
172 | printf("\n\nRights %d; Wrongs %d; Score %d%%\n", rights, wrongs, | |
173 | (rights * 100)/(rights + wrongs)); | |
174 | ||
175 | if(rights == 0) return; | |
176 | printf("Total time %ld seconds; %.1f seconds per problem\n\n\n", | |
177 | etvec - stvec, | |
178 | (etvec - stvec) / (rights + 0.)); | |
179 | ||
180 | sleep(3); | |
181 | time(&dtvec); | |
182 | stvec += dtvec - etvec; | |
183 | } | |
184 | ||
185 | delete() | |
186 | { | |
187 | if(rights + wrongs == 0.) { | |
188 | printf("\n"); | |
189 | exit(0); | |
190 | } | |
191 | score(); | |
192 | exit(0); | |
193 | } |