C C++基本輸入輸出

標籤：erro   寫入檔案   highlight   include   cout   fopen   clu   fscanf   iostream   

//#include<stdio.h>#include<fstream>#include<iostream>//http://www.cnblogs.com/Yogurshine/p/3677201.htmlusing namespace std;#define ERROR 1#define OK    0int WriteFileWithCStyle(){float f[6]={3.2f,-4.34f,25.04f,0.1f,50.56f,80.5f};FILE *fp;fp=fopen("1.txt","w");if(NULL==fp){return ERROR;}//fwrite(f,sizeof(float),sizeof(f)/sizeof(float),fp);//二進位for(int i=0;i<6;i++){fprintf(fp,"%f ",f[i]);//ASIC}fclose(fp);return OK;}int ReadFileWithCStyle(){float f[6]={0.0};FILE *fp;fp=fopen("1.txt","r");if(NULL == fp){return ERROR;}/*fread(f,sizeof(float),6,fp);//二進位fclose(fp);for(int i=0;i<6;i++){printf("f[%d] value[%2f]\r\n",i,f[i]);}*/for(int i=0;i<6;i++){fscanf(fp, "%f", &f[i]); printf("f[%d] value[%2f]\r\n",i,f[i]);} return OK;}int WriteFileWithCPPStyle(){fstream file1;file1.open("2.txt");if(!file1){cout<<"oepn error"<<endl;}char a[10];char b[10];//寫入檔案for(int i=0;i<10;i++){cin>>a[i];file1<<a[i]<<" ";}file1.close();fstream file2;file2.open("2.txt");if(!file2){cout<<"oepn error"<<endl;}//從檔案中讀取for(int i=0;i<10;i++){file2>>b[i];cout<<b[i]<<" ";}file2.close();return OK;}int main(){WriteFileWithCStyle();ReadFileWithCStyle();WriteFileWithCPPStyle();return OK;}

 

C C++基本輸入輸出