I'd like to put a string in the C language array.

You don't have to substitute temporary variables in the first place, so if I were you,

 inti, memomon[10], memoday[10], memonum[10];
char memoname [10][10];
for(
    i = 0;
    i<10&fscanf(fp, "%d%d%d%9s%d", & memomon[i], & memoday[i], memoname[i], & memonum[i])==4;
    ++i
);

I think it will be written as .If you want to use temporary variables, why don't you copy the string with strcpy?

strcpy(memoname[i], name);

バッファTo prevent buffer overflow, always specify the number of characters in the string format, such as %9s.

In C language, String (array of char) cannot be substituted (copied) with 代= 演算 operator. You should try the strcpy() function first.

This is a supplement to CertaiN's answer, but the final answer is "I want to put a string in the C language array."

 snprintf(buf, sizeof(buf), "%d", mon);

Use snprintf to string.

Array cannot be substituted with = even now.
However, structures containing arrays can be substituted with =.
K I couldn't use it when I was in K&R. I think I can do it after ANSI, but I'm not sure.

To be clear, the following method is not the royal road to copy an array.

I thought it might be faster than memcpy, so I compared the performance, and there was no significant difference.
Memcpy was very fast.今 I haven't checked what's going on now.

Array is not a good way to unify the number of elements.
It is standard to use the define constant, but it is difficult not to force it.
You can define it in a header file, but you are reluctant to define the entity in a header file.
If it is a structure, you can declare the number of elements in the array, and you can write it in a header file and share it with it.

Example of substituting arrays with =

In this example, array s2 is substituted for s1.

(Note) Non-char arrays are dangerous because alignment is not guaranteed.

#include<stdio.h>
int main(intargc, char*argv[])
{
    chars1[1024] = {0};
    chars2[]="ABCDEFGHIJKLMNOPQRSTUVWXYZ";

    typeef structure {
        chars [1024];
    } Txx;

    *((Txx*)s1)=*(Txx*)s2); // Replace array with =

    printf("s1=[%s]\n",s1);
    printf("s2=[%s]\n", s2);
    return 0;
}