c语言怎么创建文件,修改文件内容。答:按格式输入到流,其原型是int fprintf(FILE *stream, const char *format[, argument, …]);其用法和printf()相同,不过不是写到控制台,而是写到流罢了。例:fprintf(fp,"%2d%s",4,"Hahaha");9.fscanf()从流中按格式读取,其原型是int fscanf(FILE *stream, const char *format[, address,...
C语言文件的读写问题答:// 写N个 void write(CAR car[], int N){ FILE *fp;int i;if((fp=fopen("in.txt","w"))==NULL) printf("cannot open file\n");for(i=0;i<N;i++){ fprintf(fp,"%s,%d,%d,%d,%d,%d,%d,%d\n",car[i].number,car[i].in[0],car[i].in[1],car[i].in[1],car[...