使用int类型的变量

printf()中的转换说明符始终以％字符开头。 如果要输出％字符，请使用转义序列%%。

#include <stdio.h>

int main(voID)
{
  int salary;                               // Declare a variable called salary
  salary = 10000;                           // Store 10000 in salary
  printf("My salary is %d.\n", salary);
  printf("My salary is %%d.\n", salary);
  return 0;
}