#include <stdio.h>
#define MAX 100;
void le_matriz(double M[][MAX], int n, int m){
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
scanf("%lf", &M[i][j]);
}
}
}
void imprime_matriz(double M[][MAX], int n, int m){
for(int i = 0; i < n; i++){
for(int j = 0; j < m; j++){
printf("%.lf ", M[i][j]);
}
}
}
void nova_matriz(double M[][MAX], int m, int pos_i, int pos_j){
for(int i = 0; i < m; i++){
double aux = M[pos_i][j];
M[pos_i][j] = M[pos_j][j];
M[pos_j][j] = temp;
}
}
int main() {
printf("Hello world!\n");
return 0;
}
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