#include<stdio.h>#include<stdlib.h>void main(){	char c;	int i;	char *buf=malloc( sizeof(char)*100 );	if( setvbuf( stdin , buf , _IOFBF , 100 ) !=0){		perror("\n");	}	char *p=buf;	for(i=0;i<100;i++){		printf("%d ",*(p+i) );	}	printf("\n");	scanf("%c",&c);	for(i=0;i<100;i++){		printf("%d ",*(p+i) );	}	printf("\n%c \nbuf:",c);	for(i=0;i<100;i++){		printf("%d ",*(p+i) );	}	printf("\n");	memset(buf,0,100);		for(i=0;i<100;i++){		printf("%d ",*(p+i) );	}	printf("\nhere\n");	scanf("%c",&c);	printf("%c\n",c);}