实验作业
1.1
#include <stdio.h> #include <stdlib.h> int main() { printf(" 0\t 0\n"); printf("<H>\t<H>\n"); printf("I I\tI I\n"); system("pause"); return 0; }
1.2
#include <stdio.h> #include <stdlib.h> int main() { printf(" 0\n"); printf("<H>\n"); printf("I I\n"); printf("\n"); printf(" 0\n"); printf("<H>\n"); printf("I I\n"); system("pause"); return 0; }
2.1
#include <stdio.h> #include<stdlib.h> int main() { int x, y; int r1, r2, r3, r4; x = 1; y = 2; r1 = x + y; r2 = x - y; r3 = x * y; r4 = x / y; printf("r1=%d\n",r1); printf("r2=%d\n",r2); printf("r3=%d\n",r3); printf("r4=%d\n", r4); system("pause"); return 0; }
2.2
#include <stdio.h> #include<stdlib.h> int main() { float x, y; float r1, r2, r3, r4; x = 1; y = 2; r1 = x + y; r2 = x - y; r3 = x * y; r4 = x / y; printf("r1=%f\n",r1); printf("r2=%f\n",r2); printf("r3=%f\n",r3); printf("r4=%f\n", r4); system("pause"); return 0; }
3.1
#include <stdio.h> #include<stdlib.h> int main() { int n,r1, r2, r3, r4; n = 100; r1 = n*(n+1)/2; r2 = (n+1)*n/2; r3 = n/2*(n+1); r4 = (n+1)/2* n; printf("n=%d\n"); printf("r1=%d\n",r1); printf("r2=%d\n",r2); printf("r3=%d\n",r3); printf("r4=%d\n", r4); system("pause"); return 0; }
3.2
#include <stdio.h> #include<stdlib.h> int main() { int n,r1, r2, r3, r4; n = 100; r1 = n*(n+1)/2; r2 = (n+1)*n/2; r3 = n/2*(n+1); r4 = (n+1)/2* n; printf("n=%d\n"); printf("r1=%d\n",r1); printf("r2=%d\n",r2); printf("r3=%d\n",r3); printf("r4=%d\n", r4); system("pause"); return 0; } #include <stdio.h> #include<stdlib.h> int main() { int n,r1, r2, r3, r4; n = 101; r1 = n*(n+1)/2; r2 = (n+1)*n/2; r3 = n/2*(n+1); r4 = (n+1)/2* n; printf("n=%d\n"); printf("r1=%d\n",r1); printf("r2=%d\n",r2); printf("r3=%d\n",r3); printf("r4=%d\n", r4); system("pause"); return 0; }
r3,r4都会出现不精确的问题
4.1
#include<stdio.h>
int main()
{
double x, y;
char c1, c2, c3;
int a1, a2, a3;
scanf("%d%d%d", &a1, & a2, &a3);
printf("%d,%d,%d\n", a1, a2, a3);
getchar();
scanf("%c%c%c", &c1, &c2, &c3);
printf("%c,%c,%c\n", c1, c2, c3);
scanf("%lf%lf", &x, &y);
printf("%lf,%lf\n", x, y);
return 0;
}
5.1
#include <stdio.h>
int main()
{
char c1, c2;
int a1, a2;
scanf("%d%c%d%c", &a1, &c1, &a2, &c2);
printf("a1 = %d,a2 = %d\n", a1, a2);
printf("c1 = %c,c2 = %c\n", c1, c2);
return 0;
}
6.1
#include <stdio.h>
int main() {
int answer;
char words[5000];
printf("网课学习让一些人欢喜一些人忧.\n");
printf("1. 作为一个宅,社恐,觉得这样很好. 有网络,自主学习,很ok.\n");
printf("2. 不喜,不喜,很不喜. 眼睛快瞎了. 脑壳有点卡...\n");
printf("3. 中间派. 不知道. 说不清.\n");
printf("4. 其它...\n");
printf("你的选择: ");
scanf("%d", &answer);
if (answer == 4) {
printf("请补充说明你的想法: \n");
getchar();
gets_s(words);
}
printf("\n");
printf("当遇到问题时, 你会选择:\n");
printf("1. 遇到问题, 就解决问题。不懂的,搜索式学习,逐个攻破.\n");
printf("2. 遇到问题, 不高兴。然后,...,没有了.\n");
printf("3. 其它...\n");
printf("你的选择: ");
scanf("%d", &answer);
if (answer == 1)
printf(":)\n");
else if (answer == 2)
printf("这样不能解决问题啊...我们选择1好不好:)\n");
else if (answer == 3) {
printf("请补充说明你的想法: \n");
getchar();
gets_s(words);
}
return 0;
}