摘要： #include#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

摘要： #include#includeint main(void){int count,num;double grade,total;num=0;total=0;count=0;printf("Enter grades:");scanf("%lf",&grade);while(grade>=0){total=total+grade;num++;if(grade<60)count++;scanf("%lf",&grade);}if(num!=0){printf("Grade average is %.2f 阅读全文

摘要： #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

摘要： #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(op==' 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'2':case'3':case'4':case 阅读全文

摘要： #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-value2);break;case& 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:");scanf(&q 阅读全文

摘要： #includeint main(void){int digit,letter,other;char ch;int i;digit=letter=other=0;printf("Enter 10characters:");for(i=1;i='a'&&ch='A'&&ch='0'&&ch<='9')digit++;else other++;}printf("letter=%d,digit=%d,other=%d\n",letter,dig 阅读全文

摘要： #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(op=='* 阅读全文

摘要： #includeint main(void){double x,y;printf("Enter x:");scanf("%lf",&x);if(x<0){y=0;}else if(x<=15){y=4*x/3;}else{ y=2.5*x-10.5;}printf("f(%.2f)=%.2f\n",x,y);return 0;} 阅读全文