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C语言库atan2()函数
#include <stdio.h> #include <math.h> #define PI 3.14159265 int main () { double x, y, ret, val;
C语言库atan()函数
#include <stdio.h> #include <math.h> #define PI 3.14159265 int main () { double x, ret, val; x = 1.0;
C语言库asin()函数
#include <stdio.h> #include <math.h> #define PI 3.14159265 int main () { double x, ret, val; x = 0.9;
C语言库acos()函数
#include <stdio.h> #include <math.h> #define PI 3.14159265 int main () { double x, ret, val; x = 0.9;
C语言库localeconv()函数
#include <locale.h> #include <stdio.h> int main () { struct lconv * lc; setlocale(LC_MONETARY, "it_IT");
C语言库setlocale()函数
#include <locale.h> #include <stdio.h> #include <time.h> int main () { time_t currtime;
C语言库limits.h
#include <stdio.h> #include <limits.h> int main() { printf("The number of bits in a byte %d\\n", CHAR_BIT);
C语言库float.h
// ----------------------- #include <stdio.h> #include <float.h> int main () { printf("The maximum value of float = %.10e\\n", FLT_MAX);
C语言库ferror()函数
// #include <stdio.h> int main () { FILE *fp; char c; fp = fopen("file.txt", "w");
C语言库fflush()函数
#include <stdio.h> #include <string.h> #include <unistd.h> int main () { char buff[1024];
C语言库fread()函数
#include <stdio.h> #include <string.h> int main () { FILE *fp; char c[] = "this is yiibai";
C语言库freopen()函数
// #include <stdio.h> int main () { FILE *fp; printf("This text is redirected to stdout\\n");
C语言库remove()函数
#include <stdio.h> #include <string.h> int main () { int ret; FILE *fp; char filename[] = "file.txt";
C语言库rewind()函数
#include <stdio.h> int main () { char str[] = "This is yiibai.com"; FILE *fp; int ch; /* First let's write some content in the file */
C语言库setbuf()函数
#include <stdio.h> // ---------------------------- // ---------------------------- int main () { char buf[BUFSIZ];
C语言库sqrt()函数
#include <stdio.h> #include <math.h> int main () { printf("Square root of %lf is %lf\\n", 4.0, sqrt(4.0) );