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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) );
C语言库ceil()函数
#include <stdio.h> #include <math.h> int main () { float val1, val2, val3, val4; val1 = 1.6; val2 = 1.2;
C语言库fabs()函数
#include <stdio.h> #include <math.h> int main () { int a, b; a = 1234; b = -344; printf("The absolute value of %d is %lf\\n", a, fabs(a));
C语言库floor()函数
#include <stdio.h> #include <math.h> int main () { float val1, val2, val3, val4; val1 = 1.6; val2 = 1.2;
C语言库宏setjmp()
#include <stdio.h> #include <stdlib.h> #include <setjmp.h> int main () { int val; jmp_buf env_buffer;
C语言库longjmp()函数
#include <stdio.h> #include <stdlib.h> #include <setjmp.h> int main () { int val; jmp_buf env_buffer;
C语言库raise()函数
#include <signal.h> #include <stdio.h> #include <stdlib.h> void signal_catchfunc(int);
C语言库宏va_start()
#include<stdarg.h> #include<stdio.h> int sum(int, ...); int main(void) { printf("Sum of 10, 20 and 30 = %d\\n",sum(3, 10, 20, 30) );
C语言库宏va_arg()
#include <stdarg.h> #include <stdio.h> int sum(int, ...); int main () { printf("Sum of 15 and 56 = %d\\n",sum(2, 15, 56) );
C语言库sin()函数
#include <stdio.h> #include <math.h> #define PI 3.14159265 int main () { double x, ret, val; x = 45.0;
C语言库sinh()函数
#include <stdio.h> #include <math.h> int main () { double x, ret; x = 0.5; ret = sinh(x); printf("The hyperbolic sine of %lf is %lf degrees", x, ret);
C语言库atol()函数
#include <stdio.h> #include <stdlib.h> #include <string.h> int main () { long val; char str[20];
C语言库strtod()函数
#include <stdio.h> #include <stdlib.h> int main () { char str[30] = "20.30300 This is test";
C语言库strtol()函数
#include <stdio.h> #include <stdlib.h> int main () { char str[30] = "2030300 This is test";
C语言库strtoul()函数
//------------------------ #include <stdio.h> #include <stdlib.h> int main () { char str[30] = "2030300 This is test";
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