程序设计2

#include <stdio.h> #include <stdlib.h>

int main() {     char c1,c2;     FILE *fp1,*fp2;     if(fp1=fopen("source.c","r")==NULL)     {         printf("Cannot open file!");         exit(1);     }     if(fp2=fopen("newsource.c","w+"))     {         printf("Cannot build newfile");         exit(1);     }     c1='\0';     while(!feof(fp1))     {         c2=fgetc(fp1);         if((c2=='{'||c2=='}')&&(c1!='\n'))            fputc('\n',fp2);         else if((c1=='{'||c1=='}')&&(c2!='\n'))                 fputc('\n',fp2);         fputc(c2,fp2);         c1=c2;     }     rewind(fp2);     printf("经过处理后的源程序是\n");     char line[300];     int n = 1;     while (!feof(fp2))     {         fgets(line,300,fp2);         printf("%d\t%s", n, line);         n++;     }     fclose(fp1);     fclose(fp2);     return 0; }