wc

#include "stdio.h" 
#include "string.h" 
#include "stdlib.h" 
int charcalculate=0; 
int wordcalculate=0; 
int linecalculate=0; 
void calculate(char * file) 
{ 
FILE * fp; 
char a; 
if((fp=fopen(file,"r"))==NULL) 
{ 
printf("read file failed！\n"); 
exit(-1); 
} 
while(!feof(fp)) 
{ 
a=fgetc(fp); 
if(a!=‘ ‘&&a!=‘\n‘&&a!=‘\t‘&&a!=‘,‘&&a!=‘.‘&&a!=‘!‘&&a!=‘;‘&&a!=‘=‘) 
charcalculate++; 
if(a==‘ ‘||a==‘\n‘||a==‘\t‘||a==‘,‘||a==‘.‘||a==‘!‘||a==‘=‘||a==‘;‘) 
wordcalculate++; 
if(a==‘\n‘||a==‘\t‘) 
linecalculate++; 
} 
linecalculate++; 
charcalculate--; 
fclose(fp); 
} 
int main(int argc, char* argv[]) 
{ 
FILE *fp; 

calculate(argv[2]); 
while(1) 
{ 
if((fp=fopen(argv[2],"r"))==NULL) 
{ 
printf("FileNull\n\n\n"); 
scanf("%s%s%s",argv[0],argv[1],argv[2]); 
continue; 
} 
else if(!strcmp(argv[1],"-c")) 
printf("File:%sCharNum:%d\n",argv[2],charcalculate); 
else if(!strcmp(argv[1],"-w")) 
printf("File:%sWordNum:%d\n",argv[2],wordcalculate); 
else if(!strcmp(argv[1],"-l")) 
printf("File:%sLineNum:%d\n",argv[2],linecalculate); 
else if(!strcmp(argv[1],"exit")) 
{ 
printf("Exit!\n"); 
break; 
} 
else 
printf("NullPoint\n"); 
printf("\n\n"); 
scanf("%s%s%s",argv[0],argv[1],argv[2]); 
} 
return 0; 

}