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#includeint main(void){ int i,j; double item,sum; sum=0; for(i=1;i<=100;i++){ item=1; for(j=1;j<=i;j++) item=item*j; sum=sum+item; } printf("1!+2!+...+100!=%e\n",sum); return 0;} 阅读全文
posted @ 2013-10-03 16:52
huangsilinlana
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#includedouble fact(int n);int main(void){ int i; double sum; sum=0; for(i=1;i<=100;i++) sum=sum+fact(i); printf("1!+2!+...+100!=%e\n",sum); return 0;}double fact(int n){ int i; double result; result=1; for(i=1;i<=n;i++) result=result*i; return result;} 阅读全文
posted @ 2013-10-03 16:43
huangsilinlana
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#includeint main(void){ int mynumber=38; int count=0,yournumber; for(count=1;countmynumber) printf("Sorry! your number is bigger than my number!\n"); else printf("Sorry! your number is smaller than my number!\n"); } printf("Game is over!\n"); return 0;} 阅读全文
posted @ 2013-10-03 16:35
huangsilinlana
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#includeint main(void){ int i,m; printf("Enter a number:"); scanf("%d",&m); for(i=2;i=m/2&&m!=1) printf("%d is a prime number!\n",m); else printf("No!\n"); return 0;} 阅读全文
posted @ 2013-10-03 16:27
huangsilinlana
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#includeint main(void){ int count,number; count=0; printf("Enter a number:"); scanf("%d",&number); if(number<0)number=-number; do{ number=number/10; count++; }while(number!=0); printf("It contains %d digits.\n",count); return 0;} 阅读全文
posted @ 2013-10-03 11:29
huangsilinlana
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#includeint main(void){ int count,num; double grade,total; num=0; total=0; count=0; printf("Enter grade:"); scanf("%lf",&grade); while(grade>=0){ total=total+grade; num++; if(grade<60) count++; scanf("%lf",&grade); } if(num!=0){ printf("Grade average 阅读全文
posted @ 2013-10-03 11:17
huangsilinlana
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#include#includeint main(void){ int denominator,flag; double item,pi; flag=1; denominator=1; item=1.0; pi=0; while(fabs(item)>=0.0001){ item=flag*1.0/denominator; pi=pi+item; flag=-flag; denominator=denominator+2; } pi=pi*4; printf("pi=%.4f\n",pi); return 0;} 阅读全文
posted @ 2013-10-03 10:52
huangsilinlana
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#includeint main(void){ double value1,value2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&value1,&op,&value2); if(op=='+') printf("=%.2f\n",value1+value2); else if(op=='-') printf("=%.2f\n",value1-value2); else if(o 阅读全文
posted @ 2013-10-03 10:37
huangsilinlana
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#includeint main(void){ double value1, value2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&value1,&op,&value2); switch(op){ case'+': printf("=%.2f\n",value1 + value2); break; case'-': printf("=%.2f\n",value1 - value 阅读全文
posted @ 2013-10-03 10:36
huangsilinlana
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#includeint main(void){ int blank,digit,other; char ch; int i; blank=digit=other=0; printf("Enter 10 characters: "); for(i=1;i<=10;i++){ ch=getchar(); switch(ch){ case' ': case'\n': blank++; break; case'0':case'1':case'2':case'3':case' 阅读全文
posted @ 2013-10-03 10:36
huangsilinlana
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