An introduction to the C + + algorithm Contest Classic Page11 example 1-5 three-integer ordering

Title: Input 3 integers, from small to large sorted after output

Sample input:

20 7 33

Sample output:

7 20 33

First, declare three integers a,b,c and a temporary variable t:

int a,b,c,t; // 1,b,c is three integers and T is a temporary variable

Enter a three integer:

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

Make 3 if judgments:

1. If b>a, A/b is swapped

2. If c>a, then a,c swap

3. If c>b, then b,c swap

Code:

if (b>=a) {    T=B;    b=A;    A=t;} if (c>=a) {    T=c;c=a;a=t;} if (c>=b) {    T=c;c=b;b=t;}

When sorting is complete, output 3 numbers in order from large to small:

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

Full code:

//P11 Example 1-5 ordering of three integers#include <cstdio>intA,b,c,t;//1,b,c is three integers and T is a temporary variableintMain () {scanf ("%d%d%d",&a,&b,&c); if(b>=a) {T=b; b=A; A=T; }    if(c>=a) {T=c;c=a;a=T; }    if(c>=b) {T=c;c=b;b=T; } printf (" %d%d%d", A,b,c); return 0; } 

An introduction to the C + + algorithm Contest Classic Page11 example 1-5 three-integer ordering