c语言 把一个n行10列的数据组文件中前三列读写到另一个文件中答:so easy 等我coding include <stdio.h>main(){float a,b,c;FILE *fp = fopen("data.txt","r"), *fpw = fopen("result.txt","w") ;while (fscanf(fp,"%f %f %f %*f %*f %*f %*f %*f %*f %*f\n", &a,&b,&c)==3)fprintf(fpw,"%.2f %.2f %.2f\n",a,b,c...