【文件属性】：
文件名称：指针函数字符串
文件大小：52KB
文件格式：PDB
更新时间：2016-01-03 18:29:07
char×
#include
#include
int reduce(int a,int b);
int add(int a,int b);
void exercise();
int reduce(int a,int b){
return a-b;
}
int add(int a,int b){
return a+b;
}
void exercise(){
int e = 3,f = 4;
int (*c)(int a,int b);
c = add;
int d = (*c)(e,f);
printf("%d\n",d);
c = reduce;
d = (*c)(e,f);
printf("%d\n",d);
}
void exercise_two();
void exercise_two(){
char str[100];
printf("请输入字符串\n");
scanf("%s",str);
//去掉重复的字符
char *ss = str;
//char *i = ss+1;
//printf("%c\n",*i);
for(char *i = ss; *i != '\0';i++){
for(char *j = i+1; *j != '\0';j++){
if(*i == *j){
strcpy(j,j+1);
j--;
}
}
}
printf("\n");
puts(str);
}
void exercise_three();
void exercise_three(){
char str[100];
printf("请输入字符串\n");
scanf("%s",str);
//去掉重复的字符
char *ss = str;
int nums[128] = {0};
/*
for(int i = 0;i < 256;i++){
printf("%c",i);
}
*/
char *s2 = str;
while(*ss++ != '\0'){
if(nums[(int)*ss] == 0){
nums[(int)*ss] = 1;
s2 = s2+1;
*s2 = *ss;
}
}
*s2 = '\0';
printf("%s\n",str);
}
exercise_four();
exercise_four(){
char str[100];
printf("请输入字符串\n");
scanf("%s",str);
//去掉重复的字符
char *ss = str;
int nums[128] = {0};
}
int main()
{
exercise_four();
//exercise_three();
//exercise_two();
//exercise();
return 0;
}
