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1.Basic
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#include <stdio.h>
#include <stdlib.h>
int main()
{
int add(int,int);
int def(int, int);
printf("%d\n", add(1,3));
printf("%d\n", def(3,1));
return 0;
}
int add(int a, int b) { return a+b; }
int def(int a, int b) { return a-b; }
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ReturnValue (*fun_ptr)();
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#include <stdio.h>
#include <stdlib.h>
int main()
{
int add(int,int);
int def(int, int);
int (*p)();
p = add;
printf("%d\n", p(1,3));
p = def;
printf("%d\n", p(3,1));
return 0;
}
int add(int a, int b) { return a+b; }
int def(int a, int b) { return a-b; }
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#include <stdio.h>
#include <stdlib.h>
typedef struct FuncPtrEle
{
int (*fun_ptr)();
int type_code;
} ptr_t;
int add(int,int);
int def(int, int);
int main()
{
int i = 0;
ptr_t ptr_array[2];
ptr_array[0].fun_ptr = add; //ÕâÁ½Ö¸Õ븳ֵµÄ¹ý³Ì¿ÉÒÔÈÎÒâ·¢»ÓÏëÏóÁ¦¡£
ptr_array[1].fun_ptr = def; //ÖÁÓÚ×÷Óã¬ÏëÏëÃæÏò¶ÔÏóÖеĶà̬°É....
for(i = 0; i < 2; i++)
{
printf("%d\n", ptr_array[i].fun_ptr(3,1));
}
return 0;
}
int add(int a, int b) { ret
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#include <windows.h>
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exercise2.4
void squeeze(char s[],char t[])
{
int i,j,k;
int lens,lent;
lens=strlen(s);
lent=strlen(t);
for(i=0,k=0;i<lens;i++)
{
for(j=0;j<lent;j++)
if(s[i]==t[j])
break;
if(j==lent)
s[k++]=s[i];
}
s[k]='\0';
}
exercise2.5
int any(char s[],char t[ ......
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