C实验

#include main() { int a,b,c,max; scanf(\"%d %d %d\ if(a>b) { if(a>c) max=a; else max=c; } else { if(b>c) max=b; else max=c; } printf(\"max=%d\\n\ return 0; }

#include main() { int N; double a,b,i,pi=0; scanf(\"%d\ for(i=1;i<=N;i++) { a=(i+0.5)/N; b=4/(1+a*a)/N; pi+=b; } printf(\"pi=%f\\n\}

#include main() { char ch; }

printf(\"请输入任意一个字符\\n\"); ch=getchar();

if(ch>='a'&&ch<='z'||ch>='A'&&ch<='Z') printf(\"你输入的是字母\\n\"); else

if(ch>='0'&&ch<='9')

printf(\"你输入的是数字\\n\"); else

printf(\"你输入的是其他类型字符\\n\");

#include main() { int score; }

printf(\"请输入您的成绩\\n\"); scanf(\"%d\switch(score/10) {

case 10:

case 9:printf(\"您的成绩等级为A\\n\"); break;

case 8:printf(\"您的成绩等级为B\\n\"); break; case 7:printf(\"您的成绩等级为C\\n\"); break;

case 6:printf(\"您的成绩等级为D\\n\"); break; case 5: case 4: case 3: case 2: case 1: case 0: printf(\"您的成绩等级为E\\n\"); break; default: printf(\"输入有误\\n\"); }