C語言中常用的函數(shù)與語法示例。

int a = 10;float b = 3.14;char c = 'A';

int num;char ch = 'B';

int a = 5, b = 7;if (a > b && b % 2 == 0) {    printf("a is greater than b and b is even.");}

int i;for (i = 1; i <= 10; i++) {    if (i % 2 == 0) {        printf("%d is even\n", i);    }}

printf("format string", argument_list);

int a = 5;float b = 3.14;char c = 'A';printf("a = %d, b = %f, c = %c", a, b, c);

scanf("format string", argument_list);

int a;float b;char c;scanf("%d%f%c", &a, &b, &c);

strlen(string);

char str[] = "Hello, world!";int len = strlen(str);printf("The length of str is %d", len);

strcpy(destination, source);

char src[] = "Hello";char dest[10];strcpy(dest, src);printf("The copied string is %s", dest);

strcat(destination, source);

char str1[10] = "Hello";char str2[10] = "world";strcat(str1, str2);printf("The concatenated string is %s", str1);