Generar la matriz:

Generar la matriz:
[01][02][03][04]
[08][07][06][05]
[09][10][11][12]

#include<stdio.h>
#include<conio.h>
void llenar (int M[20][20], int f, int c)
{
int k=1;
for (int i=1;i<=f;i++)
{
if (i%2!=0)
{
for (int j=1;j<=c;j++)
{
M[i][j]=k; k++;
}
}
else
{
for (int j=c;j>=1;j--)
{
M[i][j]=k; k++;
}
}
}
}

void mostrar (int M[20][20], int f, int c)
{
for (int i=1;i<=f;i++)
{
printf("\n");
for (int j=1;j<=c;j++)
{
printf("[%d] ",M[i][j]);
}
}
}

int main ()
{
int f, c;
int M[20][20];
printf("Inserte filas de M: "); scanf("%d",&f);
printf("Inserte cols. de M: "); scanf("%d",&c);
llenar(M, f, c);
mostrar(M, f, c);
getch();
}