摘要：
#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
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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... 阅读全文
摘要：
#includeint main(void){ int i,m; printf("Enter a number:"); scanf_s("%d",&m); for(i=2;im/2&&m!=1) printf("%d is a prime number!\n",m); else printf("NO!\n"); return 0;} 阅读全文
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#includeint main(void){ int count,num; double grade,total; num=0; total=0; count=0; scanf_s("%lf",&grade); while(grade>=0){ total=total+grade; num++; if(grade<60) count++; scanf_s("%lf",&grade); } if(num !=0){ printf("Grade ave... 阅读全文
摘要：
#includeint main(void){ int count,number; count=0; scanf_s("%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
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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("ppi=%.4f\... 阅读全文
摘要：
#includeint main(void){ double valuel,value2; char op; printf("Type in an expression:"); scanf_s("%lf%c%lf",&valuel,&op,&value2); if(op=='+') printf("%.2f\n",valuel+value2); else if(op=='-') printf("%.2f\n",valuel-value2); else if(o 阅读全文
摘要：
#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'... 阅读全文
摘要：
#includeint main(void){ double valuel,value2; char op; printf("Type in an expression:"); scanf("%lf%c%lf",&valuel,&op,&value2); switch(op){ case'+': printf("=%.2f\n",valuel+value2); break; case'-': printf("=%.2f\n",valuel-value2); b 阅读全文
摘要：
#includeint main(void){ int choice,i; double price; for(i=1;i<=5;i++){ printf("[1]Select crisps\n"); printf("[2]Select popcorn\n"); printf("[3]Select chocolate\n"); printf("[4]Select cola\n"); printf("[0]exit\n"); printf("Enter choice:") 阅读全文