摘要： #includeint main(void){ int m,n,i; double y; y=1; printf("Enter m，n:"); scanf("%d%d",&m,&n); for(i=m;i<=n;i++){ y=y+(i*i+1/i); } printf("y=%.2f",y); return 0;} 阅读全文

摘要： #include#includeint main(void){ int i,n; double y; y=0; printf("Enter n:"); scanf("%d",&n); for(i=1;i<=n;i++){ y=y+pow(2,i); } printf("y=%Lf",y); return 0;} 阅读全文

摘要： #includeint main(void){ int denominator,flag,i,n; double item,sum; printf("Enter n:"); scanf("%d",&n); flag=1; denominator=1; sum=0; for(i=1;i<=n;i++){ item=flag*1.0/denominator; sum=sum+item; flag=-flag; denominator=denominator+2; } printf("sum=%f\n",sum); retur 阅读全文

摘要： #includeint main(void){ int i,n; double x,y,z; printf("Enter n,x:");scanf("%d%lf",&n,&x); for(i=1;i<=n;i++) { y=x*x;z=x*y;}printf("Enter z");return 0;} 阅读全文

摘要： #includeint main(void){ int i,n; double x,y; printf("Enter n:");scanf("%d",&n); for(i=1;i<=n;i++) { printf("输入 x:"); scanf("%Lf",&x); if(x<=0) { printf("输入错误，重新输入"); } else if(x<=50) { y=0.53*x; } else { y=26.5+0.58*(x-50); } printf( 阅读全文

摘要： #includeint main(void){ int num1,num2,a,b,c; double d,e; printf("Enter num1,num2"); scanf("%d%d",&num1,&num2); a=num1+num2; b=num1-num2; c=num1*num2; d=num1/num2; e=num1%num2; printf("Enter 和=%d 差=%d 积=%d 商=%.2f 余数=%.2f",a,b,c,d,e); return 0;} 阅读全文

摘要： #includeint main(void){ int year; printf("输入年份:"); scanf("%d",&year);while(year!=-1){ if((year%4==0&&year%100!=0)||(year%400==0)) { printf("这一年是 闰年\n"); printf("输入年份:"); scanf("%d",&year); } else{ printf("这一年不是闰年\n"); printf 阅读全文