FILE *fp;
fp=fopen("in.txt","r");//以只读模式打开
fscanf(fp,"%d%f",&a,&b);
fp=fopen("out.txt","w");//以只写模式打开
fprintf(fp,"%d %.1f",a,b);
fclose(fp);
FILE *fp;
fp=fopen("in.txt","r");//以只读模式打开
fscanf(fp,"%d%f",&a,&b);
fp=fopen("out.txt","w");//以只写模式打开
fprintf(fp,"%d %.1f",a,b);
fclose(fp);