C语言程序设计实验指导 部分源代码(3)

int main(){//3-3

int letter=0,blank=0,digit=0,other=0,i; char ch;

printf(\for(i=0;i<10;i++){

ch=getchar();

if(ch>='a'&&ch<='z'||ch>='A'&&ch<='Z') letter++;

else if(ch==' '||ch=='\\n')

blank++; digit++;

else if(ch<='9'&&ch>='0') else other++;

}

printf(\

other=%d\\n\ return 0; }

#include int main(){//3-4 }

char grade;

printf(\grade=getchar(); switch(grade){ }

return 0;

case 'A':;

case 'a':printf(\对应的百分制成绩区间是~100\\n\case 'B':;

case 'b':printf(\对应的百分制成绩区间是~90\\n\case 'C':;

case 'c':printf(\对应的百分制成绩区间是~79\\n\case 'D':;

case 'd':printf(\对应的百分制成绩区间是~69\\n\case 'E':;

case 'e':printf(\对应的百分制成绩区间是~59\\n\default:printf(\数据输入错误\\n\

#include int main(){//3-5

int choice,count;

for(count=0;count<5;count++){ printf(\

printf(\

printf(\printf(\printf(\

printf(\scanf(\switch(choice){ }

case 0: return 0;

case 1:printf(\case 2:printf(\case 3:printf(\case 4:printf(\default:printf(\

}

return 0;

}

#include int main(){//3-6

int i;

double grade;

for(i=0;i<5;i++){ printf(\ scanf(\ if(grade<60.0)

printf(\else

printf(\}

return 0;

}

#include #include int main(){//3-7 }

double a,b,c,s;

printf(\scanf(\if(a+b>c&&a+c>b&&b+c>a){ s=(a+b+c)/2;

printf(\}else

printf(\return 0;

#include

int main(){//3-8 double salary,rate; printf(\ scanf(\

if(salary<=850) rate=0.0;

else if(salary<=1350.0) rate=0.05; else if(salary<=2850.0)

rate=0.1;

else if(salary<=5850.0) rate=0.15; else

rate=0.2;

printf(\

return 0; }

#include

int main(){//3-9 int i,n,grade,a=0,b=0,c=0,d=0,e=0;

printf(\scanf(\for(i=0;i

scanf(\switch(grade/10){ }

case 9:

case 10:a++;break; case 8:b++;break; case 7:c++;break; case 6:d++;break; case 5: case 4: case 3: case 2: case 1:

case 0:e++;break;

}

printf(\printf(\printf(\printf(\

printf(\

return 0; }

#include int main(){//3-10 }

char sign; int x,y;

printf(\输入x运算符y：\

scanf(\if(sign=='*')

printf(\else if(sign=='/')

printf(\else if(sign=='%')

printf(\else

printf(\运算符输入错误！\\n\return 0;

实验4

#include #include int main(){//4-1-2 int flag,denominator; }

double s,eps,item; printf(\scanf(\s=0.0; flag=1;

denominator=1; item=1.0;

while(fabs(item)>eps){ item=flag*1.0/denominator;

s=s+item; flag=-flag;

denominator=denominator+3;

}

printf(\return 0;

#include int main(){//4-1-3 int x,sum;

}

sum=0;

printf(\scanf(\while(x>0){ if(x%2!=0)

sum=sum+x;

scanf(\

}

printf(\return 0;

#include int main(){//4-1-4 int num,count;

printf(\scanf(\count=0; do{ num=num/10; count++; }while(num!=0);

printf(\ return 0; }

#include int main(){//4-1-5 int n,x,min,i;

printf(\scanf(\

printf(\scanf(\min=x;

for(i=1;i

printf(\return 0;

if(x

}

int main(){//4-1-6

int n,s=0,c=0;

printf(\scanf(\