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str[sz-1]=0;//0=='\0'
#include <stdio.h>
char s[]="123 ab 4";
char *p;
int v,n,k;
void main() {
p=s;
while (1) {
k=sscanf(p,"%d%n",&v,&n);
printf("k,v,n=%d,%d,%d\n",k,v,n);
if (1==k) {
p+=n;
} else if (0==k) {
printf("skip char[%c]\n",p[0]);
p++;
} else {//EOF==k
break;
}
}
printf("End.\n");
}
//k,v,n=1,123,3
//k,v,n=0,123,3
//skip char[ ]
//k,v,n=0,123,3
//skip char[a]
//k,v,n=0,123,3
//skip char[b]
//k,v,n=1,4,2
//k,v,n=-1,4,2
//End.
#include<stdio.h>
#include<string.h>
#include<malloc.h>
int main()
{
size_t sz=1,i;
char* str=(char*)malloc(sz*sizeof(char)),*p,c;
if(!str)return 1;
while((c=getchar())!='\n')
{
p=(char*)realloc(str,++sz*sizeof(char));
if(!p){free(str);return 1;}
str=p;
str[sz-2]=c;
}
str[sz-1]=0;
i=0;
for(p=strtok(str," ");p;p=strtok(NULL," "))
printf("%4lu:%s\n",(unsigned long)++i,p);
free(str);
return 0;
}