1.1-PointersOnC-20220123

原文代码很老式

#define _CRT_SECURE_NO_WARNINGS 1
#include
#include
 
#define MAX_COLUMN 20
#define MAX_LEN 1000
 
int Read_Column_Number(int *tags,int max);
void ReArranged(char *output,const char *input,const int *tags,const int count);
 
int main(){
	int num_tags=0;
	int tags[MAX_COLUMN]={0};
	char input[MAX_LEN]={0};
	char output[MAX_LEN]={0};
	fputs("Input the column number in pairs:->",stdout);
	num_tags=Read_Column_Number(tags,MAX_COLUMN);
	fputs("Input the str:->",stdout);
	while(gets(input)!=NULL){
		ReArranged(output,input,tags,num_tags);
		printf("New->%sn",output);
		fputs("Input the str:->",stdout);
	}
return 0;}
 
int Read_Column_Number(int *tags,int max){
	int count=0,ch=0;
	for(;scanf("%d",&tags[count])==1&&tags[count]>=0&&count=len||len_output==MAX_LEN-1)
			break;
		num_char=(count%2&&i==count-1)?(len-1):tags[i+1]-tags[i]+1;
		if(len_output+num_char>MAX_LEN-1)
			num_char=MAX_LEN-len_output-1;
		strncpy(output+len_output,input+tags[i],num_char);
		len_output+=num_char;
		output[len_output]=0;
	}
}