随笔分类 - c/c++
摘要：1、 #include <stdio.h> #include <ctype.h> int main(void) { int n; unsigned long count = 0; unsigned char buf[16]; FILE *fp; char fname[FILENAME_MAX]; p
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摘要：1、13-11 #include <stdio.h> int main(void) { FILE *fp; int i; double b[10]; double a[] = {0.1,1.1,2.1,3.1,4.1,5.1,6.1,7.1,8.1,9.1}; if((fp = fopen("tmp
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摘要：c语言向文本文件、二进制文件中写入实数。 1、 #include <stdio.h> int main(void) { FILE *fp; double pi = 3.14159265358979323846; printf("pi from value: %23.21f.\n", pi); //
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摘要：13-8、 #include <stdio.h> int main(void) { FILE *sfp; FILE *dfp; int ch; char sfilename[FILENAME_MAX]; char dfilename[FILENAME_MAX]; printf("Please inp
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摘要：1、 #include <stdio.h> int main(void) { FILE *sfp; FILE *dfp; int ch; char sfilename[FILENAME_MAX]; char dfilename[FILENAME_MAX]; printf("Please input
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摘要：1、 #include <stdio.h> int main(void) { FILE *fp; int ch; char filename[FILENAME_MAX]; printf("Please input the filename: "); scanf("%s", filename); if
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摘要：1、 #include <stdio.h> int main(void) { FILE *fp; int ch; char filename[FILENAME_MAX]; printf("Please input the filename: "); scanf("%s", filename); if
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摘要：1、显示a.txt文件的内容 #include <stdio.h> int main(void) { FILE *fp; int ch; char filename[FILENAME_MAX]; printf("Please input the filename: "); scanf("%s", f
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摘要：1、 #include <stdio.h> #include <time.h> void put_data(void) { FILE *fp; if((fp = fopen("time.txt", "r")) == NULL) { printf("\aThe program is ran for t
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摘要：1、 #include <stdio.h> #include <time.h> void put_data(void) { FILE *fp; if((fp = fopen("time.txt", "r")) == NULL) printf("\aThe program is running for
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摘要：利用函数库获取当前时间。 1、 #include <stdio.h> #include <time.h> int main(void) { time_t current = time(NULL); struct tm *timer = localtime(¤t); printf("cur
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摘要：1、 #include <stdio.h> int main(void) { FILE *fp; char name[128]; double height, weight; if((fp = fopen("a.txt", "w")) == NULL) printf("\aFile open fai
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摘要：1、写入日期和时间 #include <stdio.h> #include <time.h> int main(void) { FILE *fp; time_t current = time(NULL); struct tm *timer = localtime(¤t); if((fp
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摘要：1、 #include <stdio.h> typedef struct{ char name[128]; double height; double weight; }Type1; void swap(Type1 *x, Type1 *y) { Type1 tmp = *x; *x = *y; *
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摘要：c语言中统计文件字符数 1、 #include <stdio.h> int main(void) { FILE *fp; char c1[128]; int lines = 0; fp = fopen("a.txt", "r"); while(fscanf(fp, "%s", c1) == 1) {
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摘要：1、 #include <stdio.h> int main(void) { FILE *fp; int lines = 0; char name[128]; double height, weight; double hsum = 0, wsum = 0; if((fp = fopen("a.tx
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摘要：13 - 1、 #include <stdio.h> int main(void) { FILE *fp; char filename[FILENAME_MAX]; printf("filename: "); scanf("%s", filename); if((fp = fopen(filenam
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摘要：1、 #include <stdio.h> int main(void) { int ch; FILE *sfp; FILE *dfp; char sfile[FILENAME_MAX]; char dfile[FILENAME_MAX]; printf("source file name: ");
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摘要：1、 #include <stdio.h> #include <ctype.h> int main(void) { int n; unsigned long count = 0; // count初始值为0， 为什么是unsigned long？ unsigned char buf[16]; //字
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摘要：1、 #include <stdio.h> #include <time.h> char data_file[] = "datatime.dat"; void get_data(void) { FILE *fp; if((fp = fopen(data_file, "r")) == NULL) pr
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