prepare (1/3): 
finished

make (2/3): 
gcc -g -Wall -O2 -o prim.o -c prim.c 
prim.c: In function 'main':
prim.c:25:2: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d", &esize, &vsize);
  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
prim.c:39:3: warning: ignoring return value of 'scanf', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &v1, &v2, &weight);
   ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
gcc -g -Wall -O2 -o main prim.o
finished

clean (3/3): 
finished

all task finished, build successfully