...语言:将自然数1~10及其平方根写到f2.txt文本文件中,然后再顺序读出...答:int main(int argc,char *argv[]){FILE *fp;int n;float x;if((fp=fopen("f2.txt","w+"))==NULL){printf("Failed to create file, exit...\n");return 0;}for(n=1;n<11;fprintf(fp,"%d %f\n",n,sqrt(n)),n++);rewind(fp);while(fscanf(fp,"%d%f",&n,&x)==2)...