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What is called the method of bringing two or more different types together?

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Make the program that inputs the name, the age, and sex of three and displays it.
However, data is assumed to be a memory with the structure.
Moreover, the data input and the display are assumed to do making a function respectively special.

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To memorize data without trouble even if it declares a variable separately
Explain the structure is purposely used concisely why.

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Structure

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#include <stdio.h> #include <string.h> 

typedef struct { 
	char name[256]; int 
	age; 
	int sex;  
} People;  

void InputPeople(People *data);  
void ShowPeople(People data);  

int main(void)  
{
	People data[3];  
	int i;  
	
	for (i = 0;i < 3;i++) { 
		InputPeople(&data[i]); 
	}
	
	for (i = 0;i < 3;i++) { 
		ShowPeople(data[i]); 
	}
	
	return 0;  
}

void InputPeople(People *data)  
{
	Printf ("Name");  
	scanf("%s",data->name);  
	Printf ("Age");  
	scanf("%d",&data->age);  
	Printf ("Sex (one-..man.. two-woman)");  
	scanf("%d",&data->sex);  
	printf("\n");  
}

void ShowPeople(People data)  
{
	char sex[16];  
	
	Printf ("Name: %s\n" data.name);  
	Printf ("Age: %d\n" data.age);  
	
	 Strcpy (sex "Man");
	} else { 
		Strcpy (sex "Woman");  
	}
	
	Printf ("Sex: %s\n" sex);  
	printf("\n");
}

- If you greatly enhance this program
  It is also possible to make an easy directory management program.

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Because it is possible to manage bringing data with relativity together if it makes it to the structure and it is convenient.