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/*学生成绩的平均分及其及格人数*/#includeint main(void){ int count,num,n;/*num记录输入得个数,count记录不及格的人数*/ double grade,total;/*分别存放成绩、成绩总和*/ num=0; total=0; count=0; printf("Enter n:");/*输入提示*/ scanf("%d",&n); printf("Enter grades:");/*输入提示*/ scanf("%lf",&grade); while(g 阅读全文
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/*计算数列之和*/#includeint main(void){ int denominator,molecule,flag ,i,n;/*denomiator为分母,molecule为分子,flag代表符号*/ double item,sum; printf("Enter n:");/*输入提示*/ scanf("%d",&n); flag=1;/*令起始的符号为正数*/ denominator=1; sum=0; molecule=1; for(i=1;i<=n;i++){ item=flag*molecule*1.0/... 阅读全文
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/*计算数列之和*/#includeint main(void){ int m,n,i; double x,y; y=0; printf("Enter m:");/*输入提示*/ scanf("%d",&m); printf("Enter n:"); scanf("%d",&n); for(i=m;i<=n;i++){ x=(1.0/i+i*i);/*注意了这里的1必须要加改成1.0*/ y=y+x; } printf("y=%f\n",y); return 0;} 阅读全文
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/*计算用户要支付的电费*/#includeint main(void){ double x,y; printf("Enter x(x>=0):\n");/*输入提示*/ scanf("%lf",&x); if(x<=50){/*判断输入的值*/ y=0.53*x; } else{ y=0.53*50+(x-50)*0.58; } printf("y=f(%f)=%.2f\n",x,y); return 0;} 阅读全文
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/*计算x的n次幂*/#includemain(void){ int i,n; double x,y; printf("Enter x:");/*输入提示*/ scanf("%lf",&x); printf("Enter n:");/*输入提示*/ scanf("%d",&n); for(i=1;i<=n;i++){/*利用循环计算*/ y=x*x; } printf("y=%f\n",y); return 0;} 阅读全文
摘要:
#includeint main(void){ int i,n; double x,y; printf("The enter n:"); scanf("%d",&n); for(i=1;i50){ y=0.53*50+(x-50)*0.58; printf("y=%.2f\n",y); } } return 0;} 阅读全文
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/*计算求n个圆柱的体积*/#includeint main(void){ int i,n,r,h;/*r为圆柱底面的半径,h为原著的高*/ double v;/*v为原著的体积*/ printf("the enter n:"); scanf("%d",&n); for(i=1;i<=n;i++){ printf("the enter r:"); scanf("%d",&r); printf("the enter h:"); scanf("%d",&am 阅读全文
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/*四则运算并计算其余数*/#includeint main(void){ int num1,num2,sum,n,m,x;/*sum为两数之和,n为两数之差,m为两数之积,v为两数之商,x为余数*/ double v; printf("Enter num1:"); scanf("%d",&num1); printf("Enter num2:"); scanf("%d",&num2); sum=num1+num2; printf("sum=%d\n",sum); n=num1-n 阅读全文
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/*计算圆的面积*/#includeint main(void){ double R,S;/*R为圆的半径,S为圆的面积*/ printf("Enter R:"); scanf("%lf",&R); if(R<=0){/*判断输入的值是否正确*/ printf("Enter is wrong !"); } else{ S=3.14*R*R; } printf("S=%.2lf\n",S); return 0;} 阅读全文
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#includeint main(void){ int i,k; char str1[80],str2[80]; long number;printf("Enter a string:"); i=0; while((str1[i]=getchar())!='\n') i++; str1[i]='\0'; k=0; for(i=0;str1[i]!='\0';i++) if (str1[i]>='0'&&str1[i]='a'&&str1[i]='A& 阅读全文