4
初识C语言(5)_wx633bccf4c79a4的技术博客_51CTO博客
source link: https://blog.51cto.com/u_15815865/5840756
Go to the source link to view the article. You can view the picture content, updated content and better typesetting reading experience. If the link is broken, please click the button below to view the snapshot at that time.
初识C语言(5)
精选 原创if选择函数:
int main()
{
int a = 10;
int b = 20;
if (a < b) //注意if后面要加条件语句且条件语句后不能加“;”
printf("a = %d\n ", a);
else
printf("b = %d\n", b);
return 0;
}
{
int a = 10;
int b = 20;
if (a < b) //注意if后面要加条件语句且条件语句后不能加“;”
printf("a = %d\n ", a);
else
printf("b = %d\n", b);
return 0;
}
如图:加“;”。
while的循环语句:
int main()
{
int i = 0; //while函数结构
while (i < 5) //while加上条件语句
{ //加上大括号
i++; //加上要循环的语句
printf("%d\n", i);
}
printf("%d\n", i);
return 0;
}
{
int i = 0; //while函数结构
while (i < 5) //while加上条件语句
{ //加上大括号
i++; //加上要循环的语句
printf("%d\n", i);
}
printf("%d\n", i);
return 0;
}
注意if函数和while函数必须放在主函数内。
函数的创建:
int S(int a, int b)
{
int z = a + b;
return z;
}
int main()
{
int x = 20;
int y = 30;
int sum = S(x, y);
printf("%d\n", sum);
return 0;
}
{
int z = a + b;
return z;
}
int main()
{
int x = 20;
int y = 30;
int sum = S(x, y);
printf("%d\n", sum);
return 0;
}
int S(int a, int b)
{
int z = a + b;
return z;
}
int main()
{
int x = 20;
int y = 30;
int sum = 0;
sum = S(x,y);
printf("%d\n", sum);
return 0;
}
{
int z = a + b;
return z;
}
int main()
{
int x = 20;
int y = 30;
int sum = 0;
sum = S(x,y);
printf("%d\n", sum);
return 0;
}
自定义函数的结构:
1.数据类型 + 函数名 + (数据类型 + 变量名,数据类型 + 变量名,.......)
2.加上大括号,在大括号中加上变量与变量之间的关系,根据需要是否需要返回算的值。
3.引用函数时要先写好各个变量再写出任意的一个变量(不与上面的变量和各种关键字重合),在用这个变量 = 函数名 + (变量,变量,............)
Recommend
About Joyk
Aggregate valuable and interesting links.
Joyk means Joy of geeK