C 练习(一)
#include <stdio.h> int main(){ float sum = 0.0,avg = 0.0; int Good ,normal,fine,bad,num ,count; count = num = Good = normal = fine = bad = 0; scanf("%d",&num); while(num>0 && num<101){ sum += num; count += 1; if(num >= 90){ Good +=1; }else if(num>=80 && num<90){ normal += 1; }else if(num >=70 && num <80){ fine +=1; }else{ bad +=1; } scanf("%d",&num); } avg = sum/count; printf("平均成绩是%f\n",avg); printf("总分是%f\n",sum); }
鸡兔 同笼子问题
#include <stdio.h> void main(){ int h,f,m,n; printf("请输入总个数"); scanf("%d",&h); printf("请输入脚的数量"); scanf("%d",&f); m=(4*h-f)/2; n=(f-2*h)/2; printf("共有%d只鸡,%d只兔子",m,n); }
倒叙数组
#include <stdio.h> #define LONGTH 5 void main(){ int j,temp,array[] = {1,2,3,4,5}; for(j=0;j<LONGTH/2;j++){ temp = array[j]; array[j] = array[LONGTH-j-1]; array[LONGTH-j-1] = temp; } for(j=0;j<LONGTH;j++){ printf("%d",array[j]); } }
生命只有一次。