Miscellany

#include <stdio.h>

int main(void)
{

int tri[13][13],i,j;
int n=12; //degré du triangle

for(i=0;i<=n;i++){ tri[i][0]=1;  tri[i][i]=1;
for(j=1;j<i;j++){ tri[i][j]=tri[i-1][j]+tri[i][j-1]; }
}

//affichage
for(i=0;i<=n;i++){
for(j=0;j<=i;j++){  printf("%5d ",tri[i][j]); }
printf("\n");
}

}