《C语言程序设计》(苏小红)-课后习题答案-高等教育出版社.pdf
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2.2 #includestdio.h
main()
{
floatx=2.5,y=2.5,z=2.5;
printf(x=%f\n,x);
printf(y=%f\n,y);
printf(z=%f\n,z);
}
3.1(1) #includestdio.h
main()
{
inta=12,b=3;
floatx=18.5,y=4.6;
printf(%d\n,(float)(a*b)/2);
printf(%d\n,(int)x%(int)y);
}
3.2 #includestdio.h
main()
{
intx,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=%d\n,s);
}
3.3 #includestdio.h
#includemath.h
main()
{
floatrate=0.0225;
floatn,capital,deposit;
printf(Inputn,capital:);
scanf(%f,%f,n,capital);
deposit=capital*pow(1+rate,n);
printf(deposit=%f\n,deposit);
}
3.4 #includestdio.h
#includemath.h
main()
{
floata,b,c;
doublex,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=%f\n,x,y);
}
4.1(1) #includestdio.h
main()
{
charc1=a,c2=b,c3=c;
printf(a%cb%cc%c\n,c1,c2,c3);
}
4.1(2) #includestdio.h
main()
{
inta=12,b=15;
printf(a=%d%%,b=%d%%\n,a,b);
}
4.1(3) #includestdio.h
main()
{
inta,b;
scanf(%2d%*2s%2d,a,b);
printf(%d,%d\n,a,b);
}
4.2 #includestdio.h
main()
{
longa,b;
floatx,y;
scanf(%d,%d\n,a,b);
scanf(%f,%f\n,x,y);
printf(a=%d,b=%d\n,a,b);
printf(x=%f,b=%f\n,x,y);
}
5.1 #includestdio.h
main()
{
floata;
printf(Innputa:);
scanf(%f,a);
if(a=0)
{
a=a;
printf(a=%f\n,a);
}
else
{
a=-a;
printf(a=%f\n,a);
}
}
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