Compilare: user.c: In function ‘main’: user.c:119:3: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d %d", &nRows, &nCols); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.c:133:4: warning: ignoring return value of ‘fscanf’, declared with attribute warn_unused_result [-Wunused-result] fscanf(input, "%d", &table[i][j]); ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ user.c: In function ‘computeAproxAverage’: user.c:18:15: warning: ‘sum’ is used uninitialized in this function [-Wuninitialized] return sum/n; ~~~^~ user.c: In function ‘main’: user.c:18:15: warning: ‘sum’ is used uninitialized in this function [-Wuninitialized] return sum/n; ~~~^~ user.c:12:9: note: ‘sum’ was declared here int sum; ^~~ user.c:18:15: warning: ‘sum’ is used uninitialized in this function [-Wuninitialized] return sum/n; ~~~^~ user.c:12:9: note: ‘sum’ was declared here int sum; ^~~