苏小红c语言程序设计ppt,C语言程序设计苏小红版答案详解.doc

苏小红c语言程序设计ppt,C语言程序设计苏小红版答案详解.doc

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2.2 #include

main()

{

float x=2.5,y=2.5,z=2.5;

printf("x=%fn",x);

printf("y=%fn",y);

printf("z=%fn",z);

}

3.1(1) #include

main()

{

int a=12,b=3;

float x=18.5,y=4.6;

printf("%dn",(float)(a*b)/2);

printf("%dn",(int)x%(int)y);

}

3.2 #include

main()

{

int x,b0,b1,b2,s;

printf("Inputx:");

scanf("%d",&x);

b2=x/100;

b1=(x-b2*100)/10;

b0=x%10;

s=b0*100+b1*10+b2;

printf("s=%dn",s);

}

3.3 #include

#include

main()

{

float rate=0.0225;

float n,capital,deposit;

printf("Input n,capital:");

scanf("%f,%f",&n,&capital);

deposit=capital*pow(1+rate,n);

printf("deposit=%fn",deposit);

}

3.4 #include

#include

main()

{

float a,b,c;

double x,y;

printf("Inputa,b,c:");

scanf("%f,%f,%f",&a,&b,&c);

x=(-b+sqrt(b*b-4*a*c))/(2*a);

y=(-b-sqrt(b*b-4*a*c))/(2*a);

printf("x=%f,y=%fn",x,y);

}

4.1(1) #include

main()

{

char c1='a',c2='b',c3='c';

printf("a%cb%cc%cn",c1,c2,c3);

}

4.1(2) #include

main()

{

int a=12,b=15;

printf("a=%d%%,b=%d%%n",a,b);

}

4.1(3) #include

main()

{

int a,b;

scanf("%2d%*2s%2d",&a,&b);

printf("%d,%dn",a,b);

}

4.2 #include

main()

{

long a,b;

float x,y;

scanf("%d,%dn",&a,&b);

scanf("%f,%fn",&x,&y);

printf("a=%d,b=%dn",a,b);

printf("x=%f,b=%fn",x,y);

}

5.1 #include

main()

{

float a;

printf("Innputa:");

scanf("%f",&a);

if(a>=0)

{

a=a;

printf("a=%fn",a);

}

else

{

a=-a;

printf("a=%fn",a);

}

}

5.2 #include

main()

{

int a;

printf("Inputa:");

scanf("%d",&a);

if(a%2==0)

{

printf("a是偶数");

}

else

{

printf("a是奇数");

}

}

5.3 #include

#include

main()

{

float a,b,c,s,area;

printf("Inputa,b,c:");

scanf("%f,%f,%f",&a,&b,&c);

if(a+b>c&&a+c>b&&b+c>a)

{

s=(a+b+c)/2;

area=(float)sqrt(s*(s-a)*(s-b)*(s-c));

printf("area=%fn",area);

}

else

{

printf("不是三角形");

}

}

5.4 #include

#include

main()

{

float a,b,c,x,y;

printf("Inputa