C语言作业2
#include<stdio.h> int main(){ int a=5, b=7, c=100, d, e, f; d=a/b*c; e=a*c/b; f=c/b*a; printf("d=%d,e=%d,f=%d/n",d,e,f); return 0; }
#include<stdio.h> int main(){ int x=1234; float f=123.456; double m=123.456; char ch='a'; char a[]="Hello,world!"; int y=3,z=4; printf("%d%d\n",y,z); printf("y=%d,z=%d\n",y,z); printf("%8d,%2d\n",x,x); printf("%f,%8f,%8.1f,%0.2f,%.2e\n",f,f,f,f,f); printf("%1f\n",m); printf("%3c\n",ch); printf("%s\n%15s\n%10.5s\n%2.5s\n%.3s\n",a,a,a,a,a); return 0; }
#include<stdio.h> int main(){ int x=1234; float f=123.456; double m=123.456; char ch='a'; char a[]="Hello,world!"; int y=3,z=4; printf("%d%d\n",y,z); printf("y=%d,z=%d\n",y,z); printf("%8d,%2d\n",x,x); printf("%f,%8f,%8.1f,%0.2f,%.2e\n",f,f,f,f,f); printf("%1f\n",m); printf("%3c\n",ch); printf("%s\n%15s\n%10.5s\n%2.5s\n%.3s\n",a,a,a,a,a); return 0; }
#include<stdio.h> int main(){ char x; x=getchar(); if(x>='0'&&x<='9') printf("%c是数字字符\n",x); else if(x>='a'&&x<='z'||x>='A'&&x<='Z') printf("%c是英文字母\n",x); else printf("%c是其它字符\n",x); return 0; }
#include<stdio.h> int main(){ char ans1,ans2; printf("复习了没?(输入y或Y表示复习了,输入n或N表示没复习):"); ans1=getchar(); getchar(); printf("\n动手敲代码了没?(输入y或Y表示敲了,输入n或N表示木有敲):"); ans2=getchar(); if((ans1=='y'||ans1=='Y')&&(ans2=='y'||ans2=='Y')) printf("罗马不是一天建成的:)\n"); else printf("罗马不是一天毁灭的。。。\n"); return 0; }
#include<stdio.h> #include<math.h> int main(){ int s,a1=1; double q=2,n; scanf("%lf",&n); s=a1*(1-pow(q,n))/(1-q); printf("n=%.0lf时,sum=%d",n,s); return 0; }