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/*
˼·£ºµÝ¹éËã·¨
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ÔòÏÔÈ»¼ÓÉÏ£¬now..n£¬¶¼ÊÇеÄ×éºÏÊý£¬¶ÔÓÚÿһ¸ö£¬{ Êä³öÖ®£¬È»ºóµÝ¹é£¬´¦Àí _c(n, cur+1, a, i+1) }
*/
/* Êä³ö1,2,3,..,nµÄ×éºÏÊý */
#include <stdio.h>
#include <assert.h>
#include <malloc.h>
void c(int n)
{
extern void _c(int n, int cur, int *a, int now);
int *a;
a = (int *) malloc(n * sizeof(int));
assert(a != NULL);
_c(n, 0, a, 1);
free(a);
}
void _c(int n, int cur, int *a, int now)
{
int i,j;
for (i=now; i<=n; i++)
{
a[cur] = i;
for (j=0; j<=cur; j++)
{
printf("%d ", a[j]);
}
printf("\n");
_c(n, cur+1, a, i+1);
}
}
int main()
{
c(3);
}


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Çó·½³Ìax^2+bx+c=0µÄ¸ù(º¯Êý)

#include<stdio.h>
#include<math.h>
float x1,x2,disc,p,q;
int main()
{
void greater_than_zero(float,float);
void equal_to_zero(float,float);
void smaller_than_zero(float,float);
float a,b,c;
printf("\ninput a,b,c:");
scanf("%f,%f,%f",&a,&b,&c) ......

C bomb¡£¡£¡£¡£FML~~~

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#include<stdio.h>
#include<math.h>
int fab(int);
int judge(int);
int main()
{
int a[30]={0};
int i,n,t=0;
do
{
printf("Input the number\n");
scanf("%d",&n);
}
while(n>3 ......

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