Compilare: main.cpp: In function 'int main()': main.cpp:19:22: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 19 | for(int j=0;j<strlen(s);j++) | ~^~~~~~~~~~ main.cpp:45:34: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 45 | for(int k=1;k<strlen(s);k++) | ~^~~~~~~~~~ main.cpp:53:30: warning: comparison of integer expressions of different signedness: 'int' and 'size_t' {aka 'long unsigned int'} [-Wsign-compare] 53 | for(int k=0;k<strlen(s);k++) | ~^~~~~~~~~~ main.cpp:53:17: warning: this 'for' clause does not guard... [-Wmisleading-indentation] 53 | for(int k=0;k<strlen(s);k++) | ^~~ main.cpp:55:21: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for' 55 | j=-1; | ^ main.cpp:13:13: warning: unused variable 'pres' [-Wunused-variable] 13 | int pres=1; | ^~~~