Mine

#include <stdio.h>

int main(void)
{

int tri[7][7],i,j;
int n=6; //degré du triangle

tri[0][0]=1;

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

}

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

}