1034 有理数四则运算 (20 分)
2019-05-19 本文已影响0人
79d12e22ec53
#include<stdio.h>
int gong(long long a,long long b)
{
long long r,min,max;
min=(a>b)?b:a;
max=(a>b)?a:b;
r=max%min;
while(r)
{
max=min;
min=r;
r=max%min;
}
return min;
}
void print(long long a,long long b)
{
long long flag=0,c,d,e;
if(a<0){
a=-a;
flag=1;
}
if(a==0) printf("0");
else{
e=gong(a,b);
a/=e;
b/=e;
c=a/b;
d=a%b;
if(flag==0){
if(d==0) printf("%lld",c);
else{
if(c==0) printf("%lld/%lld",a,b);
else printf("%lld %lld/%lld",c,d,b);
}
}
else{
if(d==0) printf("(-%lld)",c);
else{
if(c==0) printf("(-%lld/%lld)",a,b);
else printf("(-%lld %lld/%lld)",c,d,b);
}
}
}
}
void add(long long a1,long long b1,long long a2,long long b2)
{
print(a1,b1);
printf(" + ");
print(a2,b2);
printf(" = ");
print(a1*b2+a2*b1,b1*b2);
printf("\n");
}
void minus(long long a1,long long b1,long long a2,long long b2)
{
print(a1,b1);
printf(" - ");
print(a2,b2);
printf(" = ");
print(a1*b2-a2*b1,b1*b2);
printf("\n");
}
void muilt(long long a1,long long b1,long long a2,long long b2)
{
print(a1,b1);
printf(" * ");
print(a2,b2);
printf(" = ");
print(a1*a2,b1*b2);
printf("\n");
}
void divide(long long a1,long long b1,long long a2,long long b2)
{
print(a1,b1);
printf(" / ");
print(a2,b2);
printf(" = ");
if(a2==0) printf("Inf\n");
else{
if(a2<0){
a2=-a2;
a1=-a1;
}
print(a1*b2,b1*a2);
printf("\n");
}
}
int main()
{
long long a1,b1,a2,b2;
while(~scanf("%lld/%lld %lld/%lld",&a1,&b1,&a2,&b2))
{
add(a1,b1,a2,b2);
minus(a1,b1,a2,b2);
muilt(a1,b1,a2,b2);
divide(a1,b1,a2,b2);
}
return 0;
}
