Compilare: main.c: In function 'initGraphMatrix': main.c:32:3: warning: 'return' with no value, in function returning non-void return; ^~~~~~ main.c:27:13: note: declared here graphMatrix initGraphMatrix(const char* filename) ^~~~~~~~~~~~~~~ main.c:34:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &graph.numNodes); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:35:2: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &graph.numEdges); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ main.c:43:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &linie); ^~~~~~~~~~~~~~~~~~~~~~~ main.c:44:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &coloana); ^~~~~~~~~~~~~~~~~~~~~~~~~ main.c:45:3: warning: ignoring return value of 'fscanf', declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &graph.costMatrix[linie][coloana]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~