C语言-strcpy
C语言-strcpy
char a[10] = "abcde";
char b[5] = "XYZ";
strcpy(a,b);
printf("%c",a[2]);
执行strcpy后，a的前4个元素被复制为b的元素，剩余部分保持不变
strcpy(a,b);
把b的值复制到a, b的元素个数小于a，则复制b的元素到a中，包括 \0 ,
char a[10] = "abcde";
char b[5] = "XYZ";
定义之后
| 元素 | 值 |
|---|---|
| a[0] | ‘a’ |
| a[1] | ‘b’ |
| a[2] | ‘c’ |
| a[3] | ‘d’ |
| a[4] | ‘e’ |
| a[5] | ‘\0’ |
| b[0] | ‘X’ |
| b[1] | ‘Y’ |
| b[2] | ‘Z’ |
| b[3] | ‘\0’ |
strcpy(a,b);
复制后
| 元素 | 值 |
|---|---|
| a[0] | ‘X’ |
| a[1] | ‘Y’ |
| a[2] | ‘Z’ |
| a[3] | ‘\0’ |
| a[4] | ‘e’ |
| a[5] | ‘\0’ |
| b[0] | ‘X’ |
| b[1] | ‘Y’ |
| b[2] | ‘Z’ |
| b[3] | ‘\0’ |
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