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思维导图

1将当前的时间写入到time. txt的文件中，如果ctrl+c退出之后，在再次执行支持断点续写

1.2022-04-26 19:10:20

2.2022-04-26 19:10:21

3.2022-04-26 19:10:22

//按下ctrl+c停止，再次执行程序

4.2022-04-26 20:00:00

5.2022-04-26 20:00:01

#include <head.h>
int main(int argc, const char *argv[])
{FILE * fp=fopen("./time.txt","a+");if(NULL==fp)PRINT_ERROR("fopen error");int i=1;int res;while(res=fgetc(fp)!=EOF){if(res=='\n')i++;}while(1){time_t sec;time_t res=time(&sec);struct tm *t=localtime(&sec);if(t==NULL)PRINT_ERROR("localtime error");fprintf(fp,"%d.%d-%d-%d %02d:%02d:%02d\n",i,t->tm_year+1900,t->tm_mon+1,t->tm_mday,t->tm_hour,t->tm_min,t->tm_sec);fflush(fp);//	fscanf(fp,"%d %d %d %d %02d %02d %02d",&i,&t->tm_year+1900,&t->tm_mon+1,&t->tm_mday,&t->tm_hour,&t->tm_min,&t->tm_sec);printf("%d.%d-%d-%d %02d:%02d:%02d\n",i+k,t->tm_year+1900,t->tm_mon+1,t->tm_mday,t->tm_hour,t->tm_min,t->tm_sec);sleep(1);i++;}return 0;
}

2.使用fwrite和fread函数实现图片的拷贝

prt sc ---截图

eog 文件名 ----》打开文件

#include <head.h>
int main(int argc, const char *argv[])
{//1.以读取打开一个文件 FILE* fp1=fopen("../图片/1.png","r+");FILE *fp2=fopen("./cv.png","w+");if(NULL==fp1||NULL==fp2)PRINT_ERROR("fopen error");char buf[128]={0};while(fread(buf,sizeof(char),1,fp1)){if( fwrite(buf,sizeof(char),1,fp2)==0)return -1;}fclose(fp1);fclose(fp2);return 0;
}
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