手动创建两个文本文件text1.txt,text2.txt,要求编程创建text3.txt,实现text1.txt和text2.txt文件中除去首行和末尾对应的数据相加,三个文本的内容如下:
#include <stdio.h> int main() { FILE *fp1 = fopen("text1.txt", "ab+"); if(fp1 == NULL) { perror("fopen1"); return -1; } FILE *fp2 = fopen("text2.txt", "ab+"); if(fp2 == NULL) { perror("fopen2"); return -1; } FILE *fp3 = fopen("text3.txt", "ab+"); if(fp3 == NULL) { perror("fopen3"); return -1; } int a = fgetc(fp1); int b = fgetc(fp2); while(a != EOF && b != EOF) { if(a < '0' || a > '9') { if(fputc(a,fp3) == EOF) { perror("fputc"); return -1; } } if(a >= '0' && a <= '9') { int c = a + b - '0'; if(fputc(c,fp3) == EOF) { perror("fputc"); return -1; } } a = fgetc(fp1); b = fgetc(fp2); } fclose(fp1); fclose(fp2); fclose(fp3); return 0; }
